Rapid Definition

răpĭd
rapidest, rapids, rapider
adjective
rapidest, rapider
Moving, progressing, or occurring with speed; swift; fast; quick.
Webster's New World
Antonyms:
noun
A part of a river where the current is relatively swift, as because of a narrowing of the riverbed.
Webster's New World
A rapid transit car, train, or system.
Webster's New World

Other Word Forms of Rapid

Noun

Singular:
rapid
Plural:
rapids

Adjective

Base Form:
rapid
Comparative:
rapider
Superlative:
rapidest

Origin of Rapid

  • Latin rapidus from rapere to seize rep- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • Latin rapidus

    From Wiktionary

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