Adjective rash has 2 senses
  1. rash - imprudently incurring risk; "do something rash that he will forever repent"- George Meredith
    Antonym:
    prudent (indirect, via imprudent)
  2. foolhardy, rash, reckless - marked by unthinking boldness; with 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 the World Trade Center"
    Antonym: timid (indirect, via bold)
,Noun rasher has 1 sense
  1. vermillion rockfish, rasher, Sebastodes miniatus - a commercially important fish of the Pacific coast of North America
    --1 is a kind of rockfish
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