What an idiom is

A term you'll meet in language and diction.

An idiom is a fixed phrase whose meaning can't be worked out from the literal sense of its words. "Kick the bucket" has nothing to do with buckets; "spill the beans" involves no beans. You simply have to know what the whole expression means — which is exactly what makes idioms a marker of fluency.

Meaning beyond the words

Idioms are figurative by nature. "Under the weather" means unwell; "the ball is in your court" means it's your decision. Because the meaning is conventional rather than literal, idioms are notoriously hard for language learners — and a rich source of confusion (and comedy) when taken at face value.

What idioms do in writing

Idioms make prose and dialogue sound natural and rooted in a real speech community. A character who uses the right idioms feels authentic; the absence of them can make dialogue sound stilted or "translated." Idioms carry the texture of how people actually talk.

Idiom vs. cliché

The two overlap but aren't identical. An idiom is simply a fixed figurative phrase; it's part of the language. A cliché is an expression — often an idiom — that has been overused into staleness. "Raining cats and dogs" is an idiom that has also become a cliché. Idioms are tools; clichés are tools worn smooth.

How to read for them

Notice when a phrase can't be read literally — that's the idiom flagging itself. In translated literature especially, watch how idioms are handled: the choice to keep a foreign idiom strange or to swap in a native one quietly shapes the voice you hear.

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