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Want to find out what does the word fast mean? We gathered all the possible definitions of the word fast on our website. Our definition dictionary is updated all the time with new definitions and is ready to help you.


Part of speech: Verb

To abstain from food, either from necessity, or as a religious rite.

Part of speech: Noun

The doing without food as a religious duty.

Part of speech: Adjective

Quick; speedy in motion; in advance of the standard: said of a timepiece; firm; close; faithful; gay.

Part of speech: Adverb

Rapidly, firmly.

Usage examples "fast":