Etymology
1. The adjective is derived from Middle English rash, rasch (“hasty, headstrong, rash”) [and other forms], probably from Old English *ræsċ (“rash”) (found in derivatives such as ræsċan (“to move rapidly; to flicker; to flash; to glitter; to quiver”), ræsċettan (“to crackle, sparkle”), etc.), from Proto-West Germanic *rask, *raskī, *rasku, from Proto-Germanic *raskaz, *raskuz, *raþskaz, *raþskuz (“rash; rapid”), from Proto-Indo-European *Hreth₂- (“to run, roll”). The Middle English word was probably influenced by the cognates listed below.
2. The adverb is derived from Middle English rashe (“quickly, rapidly”), from rash, rasch (adjective) (see above).
3. Cognates
4. * Dutch ras, rasch (“rash”)
5. * Middle Low German rasch (“rash”)
6. * Old Danish rask (“agile, nimble; fast; healthy, vigorous”) (modern Danish rask (“agile, nimble; fast; healthy, vigorous; hasty, rash”))
7. * Old High German reski (“impetuous, rash”) (Middle High German rasch, resch (“agile, nimble; fast; lively; healthy, vigorous”), modern German rasch, räsch, resch (“agile, nimble; fast; hasty, rash; healthy, vigorous; of food: crisp, crusty”))
8. * Old Norse rǫskr (“brave; healthy, vigorous”) (Icelandic röskur (“strong; healthy, vigorous”))
9. * Old Swedish rasker (“agile, nimble; brave; fast; vigorous”) (modern Swedish rask (“agile, nimble; fast; healthy, vigorous”)) See: Dutch Adjectives '
ras', German Adjectives '
rasch', Swedish Adjectives '
rask'.
Verbs referencing "rash"
Dutch Adjectives
ras, German Adjectives
rasch.