rapid adj 1 moving, acting or happening quickly; fast. 2 photog requiring short exposure. noun (usually rapids) a part of a river where the water flows quickly, usually over dangerous, sharply descending rocks. rapidity or rapidness noun. rapidly adverb.ETYMOLOGY: 17c: from Latin rapidus, from rapere to seize. (Chambers Dictionary) Il faut lire les opus de... Lire la Suite →