rash

nouns

any red eruption of the skin
a series of unexpected and unpleasant occurrences
"a rash of bank robberies"; "a blizzard of lawsuits"

adjectives

imprudently incurring risk
"do something rash that he will forever repent"- George Meredith
is derived from
is similar to
not prudent or wise
"very imprudent of her mother to encourage her in such silly romantic ideas"; "would be imprudent for a noneconomist to talk about the details of economic policy"- A.M.Schlesinger
marked by defiant disregard for danger or consequences
"foolhardy enough to try to seize the gun from the hijacker"; "became the fiercest and most reckless of partisans"-Macaulay; "a reckless driver"; "a rash attempt to climb Mount Everest"
is derived from