The definition of rash is something done or said too fast.(adjective)
An example of rash used as an adjective is a rash decision, a decision made without any consideration of the consequences.
Rash is defined as a sudden outbreak of something.(noun)
See rash in Webster's New World College Dictionary
Origin: ME rasch, prob. < OE *ræsc, akin to ON röskr, Ger rasch
Origin: MFr rasche < VL *rasica, a scraping: see rascal
See rash in American Heritage Dictionary 4
adjective rash·er, rash·est
Origin: Middle English rasch, active, unrestrained
Origin: , perhaps from Old English -raesc (in līgrǽsc, lightning)
Origin: or from Middle Dutch
Origin: or Middle Low German rasch, fast.
Origin: Possibly from obsolete French rache, a sore
Origin: , from Old French rasche, scurf
Origin: , from raschier, to scrape, scratch
Origin: , from Vulgar Latin *rāsicāre
Origin: , from Latin rāsus
Origin: , past participle of rādere; see rēd- in Indo-European roots.
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