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Idioms are fun phrases where the words together mean something totally different from what they say one by one. People use them to make talking and writing more colorful, exciting, and full of life. Today, you are going to learn a bunch of helpful idioms that all have to do with liars and telling untruths.
In this lesson, we’ll look at idioms for liars that mean telling false stories, being dishonest, and stretching the truth. Let’s get started and explore some of these helpful expressions.
Idioms for Liars
1. Fibber
Meaning: Someone who tells small, harmless untruths or white lies.
For Example: He was just a little fibber when he claimed a dog ate his homework. / Do not be a fibber about who finished the last cookie.
Other Ways to Say: Teller of tiny lies / Dishonest person
2. Stretch the truth
Meaning: To exaggerate a story or make an event sound bigger than it really was.
For Example: He liked to stretch the truth about how large the fish he caught was. / Stretching the truth on your report card gets you into trouble.
Other Ways to Say: Exaggerate / Make up details
3. Spin a yarn
Meaning: To tell a long, made-up story that is not true.
For Example: Grandpa loved to sit on the porch and spin a yarn about his childhood. / The clever student tried to spin a yarn about why he was late.
Other Ways to Say: Tell a tale / Make up stories
4. Pull the wool over someone’s eyes
Meaning: To trick or deceive someone by hiding the truth from them.
For Example: You cannot pull the wool over the teacher’s eyes with fake homework. / He tried to pull the wool over his parents’ eyes about cleaning his room.
Other Ways to Say: Trick someone / Deceive
5. Tall tale
Meaning: An unbelievable, exaggerated story that sounds completely fake.
For Example: He told a tall tale about wrestling a bear in his backyard. / The story of the flying car sounded like a wild tall tale.
Other Ways to Say: Fake story / Exaggeration
6. Crocodile tears
Meaning: Fake tears and sadness shown by someone who is not really sorry.
For Example: When he got caught breaking the toy, he cried crocodile tears. / Do not fall for her crocodile tears when she gets in trouble.
Other Ways to Say: Fake crying / False sadness
7. Two-faced
Meaning: Someone who acts friendly to your face but says bad things behind your back.
For Example: A true friend is never two-faced when talking to classmates. / We realized he was two-faced after hearing his gossip.
Other Ways to Say: Dishonest / Untrustworthy
8. Wolf in sheep’s clothing
Meaning: A dangerous or dishonest person who pretends to be harmless and kind.
For Example: Be careful of new classmates who act like a wolf in sheep’s clothing. / The sneaky trickster proved to be a wolf in sheep’s clothing.
Other Ways to Say: Fake friend / Hidden danger
9. False front
Meaning: Acting like you are someone you are not to trick others.
For Example: He put up a false front to make kids think he was brave. / Underneath his tough false front, he was very kind.
Other Ways to Say: Fake image / Pretend persona
10. Smoke and mirrors
Meaning: Tricks and false information used to confuse people and hide facts.
For Example: His explanation for missing pencils was just smoke and mirrors. / Do not use smoke and mirrors to hide your messy room.
Other Ways to Say: Trickery / False illusion
11. Feed a line
Meaning: To tell someone a false story or excuse on purpose.
For Example: He tried to feed the teacher a line about his broken pencil. / Don’t let him feed you a line about how he won the game.
Other Ways to Say: Tell an excuse / Trick with words
12. Blow smoke
Meaning: To brag or talk nonsense to trick people into believing lies.
For Example: He was just blowing smoke when he said he could jump over the fence. / Stop blowing smoke and tell us the real truth.
Other Ways to Say: Talk nonsense / Brag falsely
13. Double talk
Meaning: Confusing and dishonest speech meant to trick listeners.
For Example: The sneaky salesman used double talk to sell the broken toy. / When asked why he was late, he gave a confusing double talk.
Other Ways to Say: Confusing words / Deceptive speech
14. Lead someone down the garden path Meaning: To trick someone into believing a false promise.
Meaning: To trick someone into believing a false promise.
For Example: He promised to share his candy, but he was just leading me down the garden path. / Do not let dishonest friends lead you down the garden path.
Other Ways to Say: Deceive / Trick
15. Playing fast and loose Meaning: Being dishonest, careless, and untrustworthy with rules.
Meaning: Being dishonest, careless, and untrustworthy with rules.
For Example: He was playing fast and loose with the board game instructions. / Cheaters play fast and loose with classroom honesty.
Other Ways to Say: Act dishonestly / Break rules
16. Untruthful Meaning: Telling lies instead of speaking real facts.
Meaning: Telling lies instead of speaking real facts.
For Example: Being untruthful about your chores will lead to loss of privileges. / The teacher knew his excuse was completely untruthful.
Other Ways to Say: Dishonest / Lying
17. Forked tongue Meaning: Speaking with deception and saying things you do not mean.
Meaning: Speaking with deception and saying things you do not mean.
For Example: Old stories warn about people who speak with a forked tongue. / He promised to help, but spoke with a forked tongue.
Other Ways to Say: Deceptive speech / Dishonest words
18. Playing possum Meaning: Pretending to be asleep, hurt, or innocent to deceive others.
Meaning: Pretending to be asleep, hurt, or innocent to deceive others.
For Example: The lazy dog was playing possum when asked to clean up toys. / He pretended not to hear me and was playing possum.
Other Ways to Say: Pretend ignorance / Fake innocence
19. Put on an act Meaning: Pretending to feel or be something you are not.
Meaning: Pretending to feel or be something you are not.
For Example: Stop putting on an act and tell us why you took the crayons. / He was just putting on an act to impress his friends.
Other Ways to Say: Fake behavior / Pretend
20. Put on a false front Meaning: Hiding your real personality behind a dishonest mask.
Meaning: Hiding your real personality behind a dishonest mask.
For Example: There is no need to put on a false front around your family. / He put on a false front to hide his nervousness.
Other Ways to Say: Fake persona / Pretend image
21. Put on airs Meaning: Acting overly fancy and dishonest about who you are.
Meaning: Acting overly fancy and dishonest about who you are.
For Example: She started putting on airs after winning the spelling bee. / Be yourself instead of putting on airs for guests.
Other Ways to Say: Show off / Act fake
22. Painted liar Meaning: Someone who looks innocent while telling massive untruths.
Meaning: Someone who looks innocent while telling massive untruths.
For Example: He smiled sweetly, acting like a painted liar about the broken vase. / Do not trust a painted liar who smiles after cheating.
Other Ways to Say: Sneaky liar / Fake person
23. Deceptive Meaning: Causing someone to believe something that is not true.
Meaning: Causing someone to believe something that is not true.
For Example: His tricky promise was completely deceptive to his classmates. / Deceptive tricks have no place in fair games.
Other Ways to Say: Misleading / Dishonest
24. Fraud Meaning: A person who pretends to have skills or traits they lack.
Meaning: A person who pretends to have skills or traits they lack.
For Example: He claimed he built the robot alone, but was exposed as a fraud. / A true artist hates being called a fraud.
Other Ways to Say: Imposter / Fake person
25. Imposter Meaning: Someone who tricks people by pretending to be someone else.
Meaning: Someone who tricks people by pretending to be someone else.
For Example: The mystery game featured a hidden imposter among the crew. / He felt like an imposter wearing a crown in the play.
Other Ways to Say: Fake person / Deceiver
26. Charlatan Meaning: A person falsely claiming to have special knowledge or skill.
Meaning: A person falsely claiming to have special knowledge or skill.
For Example: The trickster was exposed as a charlatan who couldn’t perform magic. / Do not listen to a charlatan selling fake potions.
Other Ways to Say: Fake expert / Con artist
27. Con artist Meaning: Someone who cheats and lies to steal money or trust.
Meaning: Someone who cheats and lies to steal money or trust.
For Example: The story featured a clever con artist tricking townsfolk. / Always check facts so you aren’t fooled by a con artist.
Other Ways to Say: Swindler / Trickster
28. Swindler Meaning: A dishonest person who tricks others out of belongings.
Meaning: A dishonest person who tricks others out of belongings.
For Example: The game trade went wrong because the swindler lied about cards. / Watch out for any swindler trading fake toys.
Other Ways to Say: Cheater / Fraudster
29. Trickster Meaning: A mischievous person who loves playing deceitful pranks.
Meaning: A mischievous person who loves playing deceitful pranks.
For Example: The fox in fairy tales is often portrayed as a clever trickster. / He acted like a trickster when hiding everyone’s shoes.
Other Ways to Say: Deceiver / Prankster
30. Sly fox Meaning: A clever and dishonest person who hides their intentions.
Meaning: A clever and dishonest person who hides their intentions.
For Example: He took extra cookies like a sly fox when nobody looked. / You can’t fool me, you sly fox.
Other Ways to Say: Sneaky person / Cunning liar
31. Weaseling out Meaning: Using dishonest excuses to avoid work or responsibility.
Meaning: Using dishonest excuses to avoid work or responsibility.
For Example: He tried weaseling out of washing the dinner dishes. / Don’t go weaseling out of your chores today.
Other Ways to Say: Evade duty / Avoid work
32. Lying through your teeth Meaning: Telling a bold, obvious lie while looking someone in the eye.
Meaning: Telling a bold, obvious lie while looking someone in the eye.
For Example: He said he didn’t eat the cake while lying through his teeth with crumbs on his face. / She was lying through her teeth about finishing homework.
Other Ways to Say: Bold lie / Shameless fib
33. Pulling a fast one Meaning: Tricking or cheating someone with a quick dishonest act.
Meaning: Tricking or cheating someone with a quick dishonest act.
For Example: He tried pulling a fast one during the card game. / Don’t let him pull a fast one with the trading rules.
Other Ways to Say: Cheat / Trick
34. Selling snake oil Meaning: Promoting fake solutions or dishonest products.
Meaning: Promoting fake solutions or dishonest products.
For Example: His claim that the toy could fly was just selling snake oil. / The advertisement was selling snake oil that didn’t work.
Other Ways to Say: False promise / Fake product
35. Whitewash Meaning: Hiding mistakes or dishonesty with false explanations.
Meaning: Hiding mistakes or dishonesty with false explanations.
For Example: The committee tried to whitewash the missing funds report. / Do not try to whitewash your messy room with excuses.
Other Ways to Say: Cover up / Hide truth
36. Papering over Meaning: Hiding a big problem or lie with a temporary fix.
Meaning: Hiding a big problem or lie with a temporary fix.
For Example: Taping the broken vase was just papering over the real accident. / Telling a small lie was papering over a bigger mistake.
Other Ways to Say: Cover up / Hide flaw
37. Sweeping under the rug Meaning: Hiding bad behavior or lies so nobody notices.
Meaning: Hiding bad behavior or lies so nobody notices.
For Example: He tried sweeping his broken promise under the rug. / Do not sweep your mistakes under the rug; fix them.
Other Ways to Say: Hide trouble / Ignore error
38. Telling porkies Meaning: A playful slang phrase for telling small lies.
Meaning: A playful slang phrase for telling small lies.
For Example: He was telling porkies about how high he could jump. / Stop telling porkies and admit you dropped the ball.
Other Ways to Say: Tell fibs / Lie playfully
39. Spinning a yarn of lies Meaning: Creating an elaborate, fake story to deceive people.
Meaning: Creating an elaborate, fake story to deceive people.
For Example: He was spinning a yarn of lies about visiting outer space. / The suspect spent hours spinning a yarn of lies to police.
Other Ways to Say: Make up stories / Lie elaborately
40. Playing the innocent Meaning: Pretending you had nothing to do with a dishonest act.
Meaning: Pretending you had nothing to do with a dishonest act.
For Example: When the lamp broke, he started playing the innocent. / She was playing the innocent even though she hid the toy.
Other Ways to Say: Feign innocence / Act clueless
41. Feigning ignorance Meaning: Pretending you know nothing about a lie or trouble.
Meaning: Pretending you know nothing about a lie or trouble.
For Example: He was feigning ignorance when asked about the missing cookies. / Stop feigning ignorance and tell the truth.
Other Ways to Say: Pretend not to know / Act blank
42. Putting on a front Meaning: Wearing a fake personality to hide your true actions.
Meaning: Wearing a fake personality to hide your true actions.
For Example: He was just putting on a front to hide his failing grades. / Drop the false front and be honest with friends.
Other Ways to Say: Fake mask / Pretend behavior
43. Putting on a show Meaning: Exaggerating actions or lying for dramatic effect.
Meaning: Exaggerating actions or lying for dramatic effect.
For Example: His crying after dropping one pencil was just putting on a show. / She loves putting on a show when she gets caught.
Other Ways to Say: Act dramatically / Fake emotion
44. Playing games Meaning: Being dishonest and tricky with people’s feelings.
Meaning: Being dishonest and tricky with people’s feelings.
For Example: Stop playing games and tell me where you hid my notebook. / Honest friends do not go playing games with secrets.
Other Ways to Say: Be tricky / Act deceitful
45. Shifty Meaning: Looking dishonest, untrustworthy, and deceitful.
Meaning: Looking dishonest, untrustworthy, and deceitful.
For Example: His shifty eyes made everyone suspect he was hiding something. / Avoid dealing with shifty people during trades.
Other Ways to Say: Untrustworthy / Suspicious
46. Slippery character Meaning: Someone who cannot be trusted and always escapes blame.
Meaning: Someone who cannot be trusted and always escapes blame.
For Example: He is a slippery character who always avoids doing chores. / You can never pin down a slippery character in arguments.
Other Ways to Say: Untrustworthy / Sneaky person
47. Untrustworthy Meaning: Not able to be relied upon due to past dishonesty.
Meaning: Not able to be relied upon due to past dishonesty.
For Example: Breaking promises makes a person seem entirely untrustworthy. / Share secrets only with reliable, not untrustworthy, people.
Other Ways to Say: Dishonest / Unreliable
48. Backstabber Meaning: A fake friend who betrays your trust behind your back.
Meaning: A fake friend who betrays your trust behind your back.
For Example: Sharing secrets to get others in trouble makes you a backstabber. / Watch out for any backstabber spreading rumors.
Other Ways to Say: Betrayer / Sneaky friend
49. Double dealer Meaning: Someone who tricks people by making false deals.
Meaning: Someone who tricks people by making false deals.
For Example: The dishonest card player proved to be a double dealer. / A double dealer cannot be trusted in club elections.
Other Ways to Say: Cheater / Deceiver
50. False friend Meaning: Someone who pretends to care but lies to you.
Meaning: Someone who pretends to care but lies to you.
For Example: Finding out she lied proved she was just a false friend. / Real buddies support you instead of acting like a false friend.
Other Ways to Say: Untrustworthy peer / Fake friend
51. Snake in the grass Meaning: A hidden enemy who betrays you when least expected.
Meaning: A hidden enemy who betrays you when least expected.
For Example: He smiled to my face, but acted like a snake in the grass. / Beware of the snake in the grass who gossips.
Other Ways to Say: Hidden enemy / Betrayer
52. Phoney Meaning: Not genuine or real; a person who puts on a fake act.
Meaning: Not genuine or real; a person who puts on a fake act.
For Example: His polite smile felt completely phoney during the argument. / The fake designer watch turned out to be phoney.
Other Ways to Say: Fake / Imitation
53. Counterfeit Meaning: Made to look exact like something real to deceive people.
Meaning: Made to look exact like something real to deceive people.
For Example: The museum rejected the painting because it was counterfeit. / Always check money so you don’t accept counterfeit bills.
Other Ways to Say: Fake / Forged
54. Sham Meaning: Something that is not what it pretends to be; a complete trick.
Meaning: Something that is not what it pretends to be; a complete trick.
For Example: His apology for breaking the toy felt like a total sham. / The rigged contest turned out to be a sham.
Other Ways to Say: Fake / Deception
55. Humbug Meaning: Deceptive or false talk meant to trick listeners.
Meaning: Deceptive or false talk meant to trick listeners.
For Example: He called his friend’s spooky ghost story total humbug. / Stop talking humbug and tell me what really happened.
Other Ways to Say: Nonsense / Fake talk
56. Quack Meaning: A fake expert who lies about medical or scientific skills.
Meaning: A fake expert who lies about medical or scientific skills.
For Example: The old story featured a traveling quack selling fake elixirs. / Do not trust a quack giving false health advice.
Other Ways to Say: Fake doctor / Fraud
57. Mountebank Meaning: A trickster who deceives people with false claims.
Meaning: A trickster who deceives people with false claims.
For Example: The marketplace featured a mountebank selling fake magic rings. / Beware of any mountebank trying to trade fake cards.
Other Ways to Say: Con artist / Trickster
58. Machinator Meaning: Someone who plots sneaky and dishonest tricks in secret.
Meaning: Someone who plots sneaky and dishonest tricks in secret.
For Example: The villain in the play was a master machinator of lies. / Stop acting like a machinator and play fairly.
Other Ways to Say: Schemer / Plotter
59. Schemer Meaning: Someone who makes secret, dishonest plans to trick others.
Meaning: Someone who makes secret, dishonest plans to trick others.
For Example: The playground schemer tried to rig the game rules. / Don’t be a schemer; be honest with your team.
Other Ways to Say: Plotter / Trickster
60. Pure deceiver Meaning: A person dedicated entirely to lying and trickery.
Meaning: A person dedicated entirely to lying and trickery.
For Example: He couldn’t be trusted because he was a pure deceiver. / Spotting a pure deceiver saves you from getting tricked.
Other Ways to Say: Absolute liar / Master of lies
Exercise to Practice
- He was just a little ________ when he claimed a dog ate his homework.
- He liked to stretch the ________ about how large the fish he caught was.
- Grandpa liked to sit on the porch and ________ a yarn about his childhood.
- You cannot pull the ________ over the teacher’s eyes with fake homework.
- He told a tall ________ about wrestling a bear in his backyard.
- When he got caught breaking the toy, he cried ________ tears.
- A true friend is never ________ when talking to classmates.
- Be careful of new classmates who act like a wolf in sheep’s ________.
- He put up a false ________ to make kids think he was brave.
- His explanation for missing pencils was just smoke and ________.
- He tried to feed the teacher a ________ about his broken pencil.
- He was just blowing ________ when he said he could jump over the fence.
- The sneaky salesman used ________ talk to sell the broken toy.
- He promised to share his candy, but he was just ________ down the garden path.
- He was playing fast and ________ with the board game instructions.
Answer Key
- fibber
- truth
- spin
- wool
- tale
- crocodile
- two-faced
- clothing
- front
- mirrors
- line
- smoke
- double
- leading
- loose
Conclusion
Learning idioms for liars helps you understand stories, character traits, and everyday warnings about honesty much better. When you know what these colorful phrases mean, you can spot deception and value truth in your own writing and life.
Try using a few of these expressions the next time you read a mystery book or discuss honesty. Practicing them out loud is a great way to remember them and make your communication sound awesome.
