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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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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. …

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FAST definition: 1. moving, happening, or doing something quickly: 2. If a clock or watch is fast, it shows a time…. Learn more.

Mar 6, 2025 · The next action-packed installment of the Fast & Furious franchise, Fast & Furious 11, has exciting story details, a promising cast, and even a release window. Fast X marks the …