The definition of celerity is a very fast motion.
A written message, particularly an official communication, sent with speed.
A sending forth or setting forth the execution of some object of consequence; progress.
Rash or headlong action; precipitateness:
Eagerness to do, act, go, etc. quickly
(Slang) A way of making money, esp. a dishonest way
Speed is a slang term for the street drug methamphetamine.
Find another word for rapidness. In this page you can discover 14 synonyms, antonyms, idiomatic expressions, and related words for rapidness, like: fast, celerity, dispatch, expedition, expeditiousness, fleetness, haste, hurry, hustle, quickness and rapidity.