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Synonyms

four-letter word

American  
[fawr-let-er, fohr-] / ˈfɔrˌlɛt ər, ˈfoʊr- /

noun

  • four-letter words
    plural
  1. any of a number of short words, usually of four letters, considered offensive or vulgar because of their reference to excrement or sex.

  2. any word, typically of four letters, that represents something forbidden, disliked, or regarded with extreme distaste.

    In the dieter's vocabulary, “cake” is a four-letter word.


four-letter word British  

noun

  1. any of several short English words referring to sex or excrement: often used as swearwords and regarded generally as offensive or obscene

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

four-letter word Idioms  
  1. Any of several short English words that are generally regarded as vulgar or obscene. For example, No four-letter words are permitted in this classroom. This expression is applied mostly to words describing excretory or sexual functions. [First half of 1900s]


Other Word Forms

Noun Inflected Forms

Etymology

Origin of four-letter word

First recorded in 1925–30

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

A satisfying puzzle break: What’s a four-letter word for “Those who often hear a siren song”? Treat your brain to some delightful wordplay in today’s crossword.

From Slate ● Jul. 22, 2026

“Lull” is a four-letter word at most companies in 2026.

From The Wall Street Journal ● Jan. 8, 2026

That four-letter word should put them on notice, if this is a scam.

From MarketWatch ● Nov. 10, 2025

"That's why golf is the worst four-letter word in the world," he joked afterwards.

From BBC ● May 17, 2025

She willed herself to decipher them the way she would decipher an unfamiliar four-letter word, each symbol lined up one after another.

From "The Reader" by Traci Chee

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