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Idioms are creative phrases where the words together mean something different from what they say literally. People use them to add color, emotion, and dramatic depth to conversation and writing. In this lesson, we will explore special idioms and descriptive expressions that help us talk about broken trust, backstabbing, deceit, and the pain of betrayal.
Let’s look at expressions that capture what it means to be betrayed.
Definition: To suffer a sudden, unexpected betrayal from someone you trusted or considered a friend.
Used in a Sentence: When his close business partner secretly signed a deal behind his back, he felt completely stabbed in the back. / She trusted him with her secrets, only to feel stabbed in the back when he shared them.
Similar Expressions: Betrayed / Double-crossed
Definition: To be betrayed, abandoned, or compromised by someone for their own personal gain or advantage.
Used in a Sentence: The employees felt sold down the river when management agreed to layoffs while keeping their own bonuses. / He realized he had been sold down the river by his ally in the negotiation.
Similar Expressions: Betrayed for profit / Sacrificed
Definition: An act of treacherous betrayal by a presumed friend or ally.
Used in a Sentence: Handing over the confidential project plans to a rival company was a severe stab in the back. / She viewed his sudden resignation and shift to the competitor as a major stab in the back.
Similar Expressions: Betrayal / Treachery
Definition: To suddenly withdraw support, cooperation, or assistance, leaving someone vulnerable and betrayed.
Used in a Sentence: Just as the project was launching, the investor pulled the rug out from under them by canceling funding. / He felt completely betrayed when his sponsor pulled the rug out from under his campaign.
Similar Expressions: Abandon suddenly / Undermine
(Note: Often used for the person committing the betrayal, but describes the relationship).
Definition: To turn against, harm, or betray someone who has helped, supported, or employed you.
Used in a Sentence: After all the training and support the company gave him, joining a direct rival felt like biting the hand that feeds you. / Helping an ungrateful friend only to be gossiped about is like biting the hand that feeds you.
Similar Expressions: Ungrateful betrayal / Treachery against a benefactor
Definition: To deceive, trick, or betray someone by making false promises or leading them to false conclusions.
Used in a Sentence: The company led job applicants down the garden path with promises of remote work that didn’t exist. / He felt betrayed to discover he had been led down the garden path regarding the investment risks.
Similar Expressions: Deceive / Mislead
Definition: To break a promise, deceive, or betray someone who relied on your word.
Used in a Sentence: He promised to support her candidacy, but his loyalty played her false at the final voting hour. / Her memory sometimes played her false, but this time it was a deliberate betrayal.
Similar Expressions: Break a promise / Deceive
Definition: To sacrifice, blame, or betray someone else to protect your own interests or avoid trouble.
Used in a Sentence: When the audit revealed missing funds, the manager tried to throw his assistant under the bus. / Don’t trust him in a crisis; he is quick to throw his teammates under the bus.
Similar Expressions: Scapegoat / Betray for self-preservation
Definition: To compromise your principles, loyalties, or allies for personal gain, money, or power.
Used in a Sentence: Fans felt betrayed when their favorite independent band signed a corporate deal, feeling the members had sold out. / He sold out his principles for a higher paycheck.
Similar Expressions: Compromise loyalty / Abandon values
Definition: A deeply emotional experience of profound betrayal or heartbreak caused by someone close.
Used in a Sentence: Learning that her lifelong best friend had spread malicious rumors felt like being stabbed in the heart. / The sudden rejection by his family left him feeling stabbed in the heart.
Similar Expressions: Deeply hurt / Heartbroken betrayal
Definition: To suddenly switch from being friendly or supportive to attacking or betraying someone.
Used in a Sentence: After years of loyalty, the pack of allies turned on him the moment he made a mistake. / You never know when a desperate person might turn on you.
Similar Expressions: Betray / Attack an ally
Definition: To deceive or betray someone after making an agreement or promise to cooperate.
Used in a Sentence: The criminals planned to split the reward, but one partner double-crossed the others and took off. / Feeling double-crossed, she refused to work with him ever again.
Similar Expressions: Betray an agreement / Cheat
Definition: To deceive, trick, or pull off a con that hides a betrayal of trust.
Used in a Sentence: For months, he pulled the wool over his family’s eyes about his secret gambling debts. / She realized someone had pulled the wool over her eyes when the fake contract was exposed.
Similar Expressions: Fool / Deceive
Definition: To violate a solemn promise, vow, or trust that was placed in you.
Used in a Sentence: By leaking confidential medical records, the doctor broke faith with his patient. / Breaking faith with your closest friends is hard to ever truly repair.
Similar Expressions: Violate trust / Break a promise
(Alternative adjustment: Let’s use Judas kiss)
Judas kiss
Definition: An act of apparent friendship or affection that conceals a severe betrayal.
Used in a Sentence: His warm greeting at the door turned out to be a Judas kiss when he handed her an eviction notice. / Beware of a Judas kiss from colleagues who praise you publicly while undermining you.
Similar Expressions: Treacherous greeting / False affection
Definition: To be tricked or betrayed by walking unknowingly into a deceitful scheme.
Used in a Sentence: She realized she had fallen into a trap when the friendly invitation turned out to be a setup. / Investors fell into a trap engineered by fraudulent brokers.
Similar Expressions: Get tricked / Walk into an ambush
Definition: Deceptive, misleading tactics used to disguise a betrayal or hidden agenda.
Used in a Sentence: The corporate merger turned out to be all smoke and mirrors designed to conceal asset stripping. / Don’t let their marketing promises act as smoke and mirrors for poor service.
Similar Expressions: Illusions / Deception
Definition: To betray an accomplice or friend by revealing secrets or crimes to authorities.
Used in a Sentence: Under police questioning, one suspect ratted out his partner in exchange for a lighter sentence. / He felt betrayed when his lifelong friend ratted him out to the boss.
Similar Expressions: Inform on / Betray
Definition: Explicit betrayal originating from someone within your inner circle.
Used in a Sentence: Realizing the rumor came from his best man felt like being stabbed in the back by a friend. / It hurts worst when you are stabbed in the back by a friend you defended for years.
Similar Expressions: Close betrayal / Internal treachery
Definition: The act or habit of betraying the confidence of someone behind their back.
Used in a Sentence: Office politics were toxic because of constant back-stabbing among ambitious coworkers. / She refused to engage in back-stabbing to get a promotion.
Similar Expressions: Treachery / Underhanded behavior
Definition: To trick or swindle someone through deceit and betrayal of trust.
Used in a Sentence: The used car salesman pulled a fast one by selling a vehicle with a broken engine. / She realized her business partner pulled a fast one when the bank account was emptied.
Similar Expressions: Swindle / Trick
(Alternative variation of sold down the river)
Definition: To betray or abandon someone in a difficult, helpless situation.
Used in a Sentence: Leaving her to take the blame alone was selling her down the creek. / He felt completely sold down the creek by his defense team.
Similar Expressions: Abandon / Betray
Definition: To act disloyally toward someone who placed their trust in you.
Used in a Sentence: “I trusted you with my life, and you played me false,” she wept. / Do not play me false on this agreement, or our alliance is over.
Similar Expressions: Act disloyally / Break trust
Definition: To abandon or disown someone who has betrayed your trust or caused trouble.
Used in a Sentence: After discovering his continuous lies, she washed her hands of him completely. / The committee washed their hands of the corrupted project.
Similar Expressions: Disown / Abandon responsibility
Definition: To abandon, ignore, or refuse to help someone in need, sometimes representing a form of relational betrayal.
Used in a Sentence: He felt his family turned their back on him when he needed their support most. / She could never turn her back on a friend facing hardship.
Similar Expressions: Abandon / Forsake
Definition: To cause deep emotional pain and devastation, often through betrayal or rejection.
Used in a Sentence: Discovering his infidelity broke her heart after ten years of marriage. / False promises and sudden abandonment broke her trust.
Similar Expressions: Devastate emotionally / Crush
Definition: To suddenly pull away support, resulting in a betrayal of expectations.
Used in a Sentence: Changing the project criteria at the last minute pulled the rug out from the development team. / He felt betrayed when his mentor pulled the rug out from his promotion.
Similar Expressions: Undermine / Withdraw support
Definition: To treat someone poorly, exploiting their trust and loyalty selfishly.
Used in a Sentence: She let her colleagues walk all over her until she realized they were taking credit for her work. / Don’t let ungrateful friends walk all over your kindness.
Similar Expressions: Exploit / Take advantage of
Definition: To act irresponsibly, deceitfully, or untrustworthily with commitments and people.
Used in a Sentence: He played fast and loose with company funds and his coworkers’ trust. / You cannot play fast and loose with people’s emotions and expect no consequences.
Similar Expressions: Act irresponsibly / Be untrustworthy
Definition: To deceive, cheat, or betray someone by exploiting their trust over a period.
Used in a Sentence: The fraudulent investment advisor took trusting clients for a ride worth millions. / She felt foolish realizing her fiancé had taken her for a ride.
Similar Expressions: Swindle / Deceive
(Alternative adjustment: Let’s use Shatter trust)
Shatter someone’s trust
Definition: To completely destroy the confidence and faith someone had in you through a major betrayal.
Used in a Sentence: Lying about his financial situation shattered his wife’s trust forever. / Rebuilding a shattered trust takes years of transparent effort.
Similar Expressions: Destroy faith / Break confidence
Definition: Secretive actions, often where betrayals and backroom deals are plotted away from public view.
Used in a Sentence: The executives made a deal behind closed doors that betrayed the union’s agreement. / Decisions affecting everyone were made behind closed doors.
Similar Expressions: Secretly / Conspiratorially
Definition: Secret, illicit, or deceitful dealings that violate rules or trust.
Used in a Sentence: Accepting payments under the table was a betrayal of his licensing agreement. / The secret agreement struck under the table shocked the board members.
Similar Expressions: Illicit / Secretive
Definition: To betray your family, team, or cultural group for personal gain.
Used in a Sentence: Informing on his own family members in the scam was the ultimate act of selling out his own. / He was branded a traitor for selling out his own community.
Similar Expressions: Betray your kin / Turn traitor
Definition: To change sides and actively betray your country, organization, or friends.
Used in a Sentence: During the historic conflict, several officers turned traitor and leaked defense secrets. / Feeling abandoned by his faction, he decided to turn traitor.
Similar Expressions: Commit treason / Betray allegiance
Definition: To fail to keep your word, resulting in a breach of trust.
Used in a Sentence: Breaking a promise to your children damages their sense of security. / He broke his solemn promise to support her through the transition.
Similar Expressions: Fail to keep your word / Default
Definition: To retract a promise or agreement, betraying someone who depended on it.
Used in a Sentence: After shaking hands on the deal, he went back on his word the next morning. / You lose all credibility when you go back on your word so easily.
Similar Expressions: Retract a promise / Break an agreement
Definition: A formal expression for an act of betrayal where confidence is broken.
Used in a Sentence: Stealing client data was a severe breach of trust that led to immediate termination. / The therapist’s disclosure was a major breach of trust.
Similar Expressions: Violation of confidence / Betrayal
Definition: A treacherous, deceitful person who pretends to be a friend while plotting betrayal.
Used in a Sentence: He acted so charming, but he turned out to be a snake in the grass who sabotaged her career. / Beware of the snake in the grass who smiles in your face and steals your ideas.
Similar Expressions: Traitor / Deceitful person
Definition: Someone who hides malicious or betraying intentions behind a friendly, harmless facade.
Used in a Sentence: The charming business consultant turned out to be a wolf in sheep’s clothing who stole their client list. / Don’t let kind words fool you; she’s a wolf in sheep’s clothing.
Similar Expressions: Deceitful impostor / Hidden enemy
Definition: A blatant, open act of betrayal where someone does not even bother hiding their treachery.
Used in a Sentence: When the executive publicly denounced his coworker during the meeting, it felt like being stabbed in the back in broad daylight. / The open betrayal shocked everyone in the room.
Similar Expressions: Shameless betrayal / Open treachery
Definition: To actively betray someone who trusts you.
Used in a Sentence: Releasing confidential project notes to the media was like putting a knife in the team’s back. / He would never put a knife in the back of a friend.
Similar Expressions: Betray / Sabotage
Definition: To undermine or betray someone by removing core support unexpectedly.
Used in a Sentence: Canceling the contract at the eleventh hour pulled the rug out from the suppliers. / She felt betrayed when her financial backer pulled the rug on the venture.
Similar Expressions: Undermine / Sabotage support
(Let’s use: Stabbed in the back variant or Burn bridges)
Burn bridges
Definition: To destroy relationships, trust, and connections completely, often through betrayal or bad behavior.
Used in a Sentence: By stealing company data on his way out, he burned bridges he could never rebuild. / Never burn bridges with mentors who supported your early career.
Similar Expressions: Ruin relationships / Destroy ties
Definition: To betray your core beliefs and values for money or status.
Used in a Sentence: Abandoning environmental protections for corporate donations was seen as selling out his ideals. / She refused to sell out her ideals for an easy promotion.
Similar Expressions: Compromise values / Abandon beliefs
(Let’s use: Drop someone like a hot potato)
Drop someone like a hot potato
Definition: To abandon or reject someone immediately and callously when they are no longer useful or bring trouble.
Used in a Sentence: As soon as the scandal broke, his associates dropped him like a hot potato. / The company dropped the failing product line like a hot potato.
Similar Expressions: Abandon quickly / Cut ties
Definition: To sever ties and abandon someone who relied on you, often in a harsh betrayal of support.
Used in a Sentence: After the investment failed, the firm cut the startup founders loose without warning. / She felt abandoned when her partner cut her loose during the crisis.
Similar Expressions: Abandon / Sever ties
(Alternative: Stabbed in the back by an ally – let’s use Play Judas)
Play Judas
Definition: To act as a traitor and betray someone close for personal gain or reward.
Used in a Sentence: Accepting the bribe to expose his brother’s plan meant he was willing to play Judas. / In every dramatic story of betrayal, someone has to play Judas.
Similar Expressions: Act as a traitor / Betray
Definition: A serious violation of trust and loyalty between people or institutions.
Used in a Sentence: The leaked agreement was treated as a severe breach of faith by international partners. / Forgiving a breach of faith requires immense emotional healing.
Similar Expressions: Violation of trust / Betrayal
Definition: To be abandoned or betrayed in a helpless, unsupported situation without resources.
Used in a Sentence: When the business partner fled with the funds, she was left high and dry with all the debts. / Promising help and then disappearing left the team high and dry.
Similar Expressions: Abandoned / Stranded
Learning idioms about being betrayed helps you express complex emotions like broken trust, deceit, and heartbreak using vivid and evocative language. Whether you want to describe a dramatic backstabbing in a story or a subtle breach of confidence, these phrases add depth and realism to your writing.
Try using expressions like “stabbed in the back” or “wolf in sheep’s clothing” in your next narrative or character description to bring emotional conflict to life!
Common idioms for betrayal include stabbed in the back, sold down the river, throw someone under the bus, and go back on one’s word. These phrases capture the sting of broken trust.
Many describe intense emotional hurt or backstabbing, but some describe professional or social deceit, such as “pulling the rug out from under someone” or “selling out.”
You can call them a “wolf in sheep’s clothing,” a “snake in the grass,” or note that they gave you a “Judas kiss.”
No, these phrases are figurative expressions. For example, being “stabbed in the back” means you experienced a betrayal of trust, not an actual physical attack.
Learning these expressions adds emotional resonance, suspense, and dramatic punch to character conflicts and narrative plots, making betrayals feel authentic and impactful.