fast

/fɑːst/ adverb

Definition

QUICKLY › moving or happening quickly: We ran as fast as we could. You'll have to act fast.

fast asleep › completely asleep (= sleeping)

FIRMLY › in a firm or tight way: He tried to get away, but she held him fast. → See also thick and fast

(Definition of fast adverb from the Cambridge Learner's Dictionary © Cambridge University Press)

to express disagreement or refuse to do something

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