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call someone's bluff

/kɔːl ˈsʌmwʌnz blʌf/
phrasal verb★Intermediate— challenge someone's false claim◆idiom
◆ What It Really Means
To challenge someone to prove their claims or threats are genuine, often to expose them as false or empty.
¶ Literal Meaning
To make a phone call to someone who is pretending to have a strong hand in a card game.
Literal Breakdown
callto make a phone call+someone'sbelonging to a person+bluffa strategy in card games to deceive opponents
◇ Mental Image
A poker game where a player is challenged to reveal their cards to prove they are not bluffing.
◈ When to Use
A coworker threatens to quit if their demands are not met, and you ask them to submit a resignation letter to see if they are serious.
◉ Cultural Note
The phrase originates from poker and gambling, where bluffing is a common strategy to deceive opponents about the strength of one's hand.
informal

To challenge someone to prove their claims or threats are genuine, often to expose them as false or empty.

When the employee threatened to quit, the manager called their bluff and asked for a resignation letter.

The manager challenged the employee's threat by asking for proof.

She called his bluff by asking him to put his money where his mouth was.

She challenged him to back up his words with action.

💡

Often used in situations where someone is making a bold claim or threat but may not follow through.

Collocations

call someone's bluffchallenge someone's false claim

Synonyms

challengeexposetestprove

Antonyms

believetrustaccept

Related Phrases

bluffidiom
a deceptive move or false claim
put your money where your mouth isidiom
to back up words with action

💡Pro Tip

Usage Context

Use this phrase when you suspect someone is making a false or empty threat or claim.

⚡Gold Rule

Avoid Misuse

Do not use this phrase if you are unsure whether the person is bluffing, as it can escalate conflict.

📖Word Origin

Originates from poker and gambling, where bluffing is a strategy to deceive opponents about the strength of one's hand.

📝Usage Notes

Common in informal contexts, especially in negotiations, debates, or social interactions where someone is suspected of making false claims.

Word Breakdown

call
to challenge or demand
verb
+
someone's
a person's
possessive
+
bluff
a false or deceptive claim
noun
English Dictionary

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