rash

/ˈrash/

probably borrowed from 17th-century French rache, rasche, going back to Middle French raiche "tinea," noun derivative of racher "to chisel, groove (metal)" (probably also "to scrape, scratch," senses attested in Romance cognates), going back to Vulgar Latin *rāsicāre, verb derivative from Latin rās-, participial and nominal stem of rādere "to scrape, scratch, shave"

noun

  1. an eruption on the body

  2. a large number of instances in a short period

adjective

  1. marked by or proceeding from undue haste or lack of deliberation or caution

  2. quickly effective

a rash promise

adventurous venturesome daring daredevil rash reckless foolhardy mean exposing oneself to danger more than required by good sense. adventurous implies a willingness to accept risks but not necessarily imprudence. venturesome implies a jaunty eagerness for perilous undertakings.

adverb

  1. in a rash manner