I. ˈrash adverb
Etymology: Middle English (northern dialect) rasch quickly; akin to Old High German rasc fast
Date: 15th century
archaic : in a rash manner
II. adjective
Date: 1509
1. : marked by or proceeding from undue haste or lack of deliberation or caution
a rash promise
2. obsolete : quickly effective
Synonyms: see adventurous
• rash·ly adverb
• rash·ness noun
III. noun
Etymology: obsolete French rache scurf, from Old French raiche, from Vulgar Latin * rasica, from * rasicare to scratch, from Latin rasus, past participle of radere
Date: 1709
1. : an eruption on the body
2. : a large number of instances in a short period
a rash of complaints