Know when to fold 'em means: To exercise sound judgment in a situation that is precarious and uncertain.. It is informal slang, fine in casual speech but not suited to formal contexts. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.
know when to fold 'em
(slang, informal) To exercise sound judgment in a situation that is precarious and uncertain.
Etymology timeline
Born ~1978 · no dated citations yetBoomer / counterculture eraSee decade cohort →
Definitions
Global
#1·Apr 27, 2026Global
(slang, informal) To exercise sound judgment in a situation that is precarious and uncertain.
Origin: An allusion to a poker player knowing when to cut their losses rather than continue in an unfavorable situation. Origin information sourced from Wiktionary contributors (CC BY-SA 4.0).
For parents
Know when to fold 'em means: To exercise sound judgment in a situation that is precarious and uncertain.. It is informal slang, fine in casual speech but not suited to formal contexts. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.
For ESL learners
know when to fold 'em means: To exercise sound judgment in a situation that is precarious and uncertain.. Register: very informal, slang. Suitable only for casual conversation, chat and social media. Do not use in business, academic or news writing. Common learner mistake is using the word in a register it does not fit, or assuming a single global meaning; always check the context before producing it yourself.
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For specific readers
Why is this section here?
Slang is read by different audiences for very different reasons. The For parents view re-explains the term in plain, non-judgemental language so a caregiver can understand what their child means without needing the surrounding subculture. The For English learners view focuses on register (when it's safe to use), formal alternatives, and common mistakes — what a textbook won't teach you.
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Other words near "know when to fold 'em" (K)
knowledgeknowledgeableknowledge-boxknowledge cutoffknow one's shitknow shit from Shinolaknow whether one is Arthur or MarthaKnoxknuckknuckerknuckleknucklebone
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