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FAST definition: moving or able to move, operate, function, or take effect quickly; quick; swift; rapid: a fast pain reliever; See examples of fast used in a sentence.

Some common synonyms of fast are expeditious, fleet, hasty, quick, rapid, speedy, and swift. While all these words mean "moving, proceeding, or acting with celerity," fast and rapid are …

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Aug 18, 2025 · Here's how to watch the 'Fast & Furious' movies in order, from the original that started it all to the bonkers sequels and beyond.

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Grammar Fast, quick or quickly? Fast and quick mean moving with great speed. Fast is both an adjective and an adverb. Quick is an adjective and the adverb form is quickly. …

FAST meaning: 1 : moving or able to move quickly; 2 : happening quickly taking a short amount of time