
Friends are people we trust, laugh with, and share time with. But sometimes, not all friends are true. Some people may pretend to be nice while acting mean behind our backs. These are called fake friends. They might lie, gossip, or only want to be around when it helps them. It’s important to notice these signs so we can protect our feelings and make better choices.
To talk about fake friends, people use special phrases called idioms. Idioms are fun expressions that don’t mean exactly what the words say. Instead, they help us understand feelings and situations better. In this article, you’ll learn idioms that describe fake friends. You’ll also see easy examples so you can understand how to use them. Let’s learn how words can show us who’s real and who’s not.
Idioms about Fake Friends
1. Two-faced
Meaning: Someone who says one thing but does another.
For Example: Sarah acted nice to Emma but talked bad behind her back. She’s so two-faced.
Alternatively: You can’t trust someone who smiles at you but lies later.
2. Stab you in the back
Meaning: To betray someone who trusted you.
For Example: I shared my secret with Josh, but he told everyone. He stabbed me in the back.
Alternatively: Amy was friendly, but she stabbed me in the back when she blamed me.
3. Fair-weather friend
Meaning: A friend who is only around when things are good.
For Example: When I was sick, Mark didn’t call. He’s just a fair-weather friend.
Alternatively: She hangs out when I win, but leaves when I lose.
4. Snake in the grass
Meaning: A sneaky and untrustworthy person.
For Example: He pretended to help but was really trying to get me in trouble. A real snake in the grass.
Alternatively: Don’t trust him. He’s a snake in the grass.
5. Talk behind your back
Meaning: Say mean things about you when you’re not there.
For Example: They smiled at me but talked behind my back later.
Alternatively: I thought we were friends, but she talks behind my back.
6. Throw you under the bus
Meaning: To blame someone else to save yourself.
For Example: Jack broke the vase but told the teacher I did it. He threw me under the bus.
Alternatively: Don’t throw your friend under the bus just to look good.
7. Wolf in sheep’s clothing
Meaning: Someone who looks kind but is mean inside.
For Example: He acts nice to teachers but bullies kids. He’s a wolf in sheep’s clothing.
Alternatively: Don’t be fooled by her smile she’s not what she seems.
8. Blow hot and cold
Meaning: To be nice one moment and rude the next.
For Example: She’s friendly today but ignores me tomorrow. She blows hot and cold.
Alternatively: I never know how he’ll act he’s always hot and cold.
9. Keep you at arm’s length
Meaning: Pretend to be your friend but not really care.
For Example: Mia says we’re friends but never shares anything. She keeps me at arm’s length.
Alternatively: They invite me, but I feel like they don’t want me around.
10. Talk a good game
Meaning: Say nice things but not mean them.
For Example: He says we’re best friends but never includes me. He just talks a good game.
Alternatively: She says she’ll help, but never does.
11. Smile to your face
Meaning: Act friendly but is secretly mean.
For Example: She smiles to my face but rolls her eyes when I turn around.
Alternatively: He acts nice only when others are watching.
12. Show true colors
Meaning: Reveal who someone really is.
For Example: He showed his true colors when he laughed at me.
Alternatively: When I needed help, she showed her true colors and walked away.
13. Play both sides
Meaning: Pretend to agree with everyone.
For Example: She agrees with me and then agrees with the other side too. She plays both sides.
Alternatively: He plays both sides so no one gets mad at him.
14. Fake it till you make it
Meaning: Pretend to be nice or good until you get what you want.
For Example: She acted kind just to win class president. Fake it till you make it.
Alternatively: I saw right through her pretending.
15. Act the part
Meaning: Pretend to be someone you are not.
For Example: He acts the part of a good friend but doesn’t really care.
Alternatively: She only acts friendly when the teacher’s nearby.
16. Blow smoke
Meaning: Say things that aren’t true to seem cool.
For Example: He tells stories to look better, but it’s all smoke.
Alternatively: Don’t believe her it’s just smoke.
17. Sugarcoat the truth
Meaning: Say things nicely to hide the real meaning.
For Example: She sugarcoated the truth about not inviting me.
Alternatively: He said it nicely, but it still hurt.
18. Stir the pot
Meaning: Try to cause drama or problems.
For Example: She told both sides different things to stir the pot.
Alternatively: He just wants to stir up trouble.
19. Play innocent
Meaning: Pretend not to know what happened.
For Example: She started the rumor and then played innocent.
Alternatively: He acts like he doesn’t know what’s going on, but he does.
20. Put on a front
Meaning: Pretend to feel one way but really feel another.
For Example: She acts happy to see me, but it’s just a front.
Alternatively: He puts on a front to hide his real thoughts.
21. Fake smile
Meaning: Smile even though you don’t really mean it.
For Example: She gave me a fake smile when I joined the group.
Alternatively: I can tell that smile isn’t real.
22. Say one thing, do another
Meaning: Make promises but not keep them.
For Example: He said we’d hang out, but never showed up.
Alternatively: She always says nice things, then ignores me later.
23. Throw shade
Meaning: Say something that seems nice but is really mean.
For Example: She said, “Nice shirt,” but laughed right after. Total shade.
Alternatively: He throws shade but says, “Just joking!”
24. Use you
Meaning: Be your friend only to get something.
For Example: He only talks to me when he needs homework help. He’s using me.
Alternatively: I feel like I’m being used for answers.
25. Fair talker
Meaning: Someone who speaks kindly but can’t be trusted.
For Example: She always talks sweet, but don’t believe her. She’s just a fair talker.
Alternatively: He says what you want to hear.
26. Leave you hanging
Meaning: Not help when you need them.
For Example: I needed a ride and she left me hanging.
Alternatively: He promised to help, then didn’t show up.
27. Gossip behind your back
Meaning: Tell others your secrets or bad things about you.
For Example: I heard she told everyone about my mistake. She gossips behind my back.
Alternatively: He acts like a friend but spreads stories.
28. Flake out
Meaning: Not show up or break promises often.
For Example: She said she’d come, but flaked out again.
Alternatively: You can’t count on him he always cancels.
29. Backhanded compliment
Meaning: Say something nice that is actually rude.
For Example: “You look good for once” that’s a backhanded compliment.
Alternatively: He said I did well “for someone like me.”
30. Break your trust
Meaning: Do something that makes you stop trusting them.
For Example: He broke my trust by lying to me.
Alternatively: She promised to keep my secret, but didn’t.
31. Fake friend
Meaning: Someone who pretends to be your friend but isn’t.
For Example: I thought she cared, but she’s just a fake friend.
Alternatively: He acts friendly, but he doesn’t really like me.
32. Show off in front of others
Meaning: Try to look cool even if it means being rude.
For Example: He made fun of me to show off in front of his friends.
Alternatively: She tries to look cool by putting others down.
33. Take credit
Meaning: Act like they did something you did.
For Example: I made the art, but she took credit for it.
Alternatively: He said my idea was his.
34. Laugh at your mistakes
Meaning: Pretend to be kind but make fun of you when you mess up.
For Example: I tripped, and they laughed. Some friends!
Alternatively: A real friend helps you, not laughs at you.
35. Turn others against you
Meaning: Make your friends not like you anymore.
For Example: He told lies to turn my friends against me.
Alternatively: She made everyone stop talking to me.
36. Be nice only in public
Meaning: Act friendly around others but mean when alone.
For Example: He’s nice when teachers watch but mean at lunch.
Alternatively: She acts different when no one’s around.
37. Copy you then claim it’s theirs
Meaning: Take your idea and say it was theirs.
For Example: I made the poster, but he copied me and took credit.
Alternatively: She copied my words and told the teacher it was hers.
38. Ignore your feelings
Meaning: Not care how you feel.
For Example: I told her it hurt my feelings, and she just laughed.
Alternatively: He never asks how I’m doing.
39. Leave when you’re down
Meaning: Stop being your friend when things go wrong.
For Example: When I lost the contest, she stopped talking to me.
Alternatively: He’s only around when things are good.
40. Only care about themselves
Meaning: Act like a friend, but think only of their own needs.
For Example: She talks about herself and never listens to me.
Alternatively: He doesn’t care unless it’s about him.
True/False Quiz: Idioms About Fake Friends
- A “two-faced” friend always tells the truth and supports you.
True / False - If someone “stabs you in the back,” they have helped you a lot.
True / False - A “fair-weather friend” is only around when things are going well.
True / False - “Snake in the grass” means a person who is quiet and honest.
True / False - If someone “throws you under the bus,” they are protecting you.
True / False - A friend who “talks behind your back” says unkind things when you’re not there.
True / False - A “wolf in sheep’s clothing” pretends to be kind but is really mean.
True / False - When someone “uses you,” they only want to be your friend to get something.
True / False - A person who gives a “fake smile” really cares about you.
True / False - “Leaving you hanging” means they didn’t help when they said they would.
True / False
Answer Key
- False
- False
- True
- False
- False
- True
- True
- True
- False
- True
Scoring Guide
- 10 Correct Answers: Topics Master!
- 7–9 Correct Answers: You really get Topics nice work!
- 4–6 Correct Answers: You’re learning, keep going!
- 0–3 Correct Answers: Let’s learn about Topics together!
Conclusion
Not everyone who smiles at you is a true friend. Some people may say kind things but act mean later. That’s why it’s good to learn idioms about fake friends. These phrases help us talk about what fake friends do in ways that are easy to understand.
By knowing these idioms, you can spot when someone is not being real. You can also tell others how you feel using clear, short sayings. Keep these in mind, and you’ll be better at choosing friends who treat you right.


