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English definition of “nasty”

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nasty

adjective
 
 
/ˈnɑːsti/
BAD B1 very bad: a nasty shock/surprise a nasty smell/taste a nasty cut/burnSerious and unpleasantNot attractive to look atInformal words for bad
UNKIND B1 unkind: She's always being nasty to her little brother.Unkind, cruel and unfeelingViolent or aggressiveTreating people or animals badlyInsults and abuse
ANGRY B2 very angry or violent: When I asked for the money, he turned really nasty.Violent or aggressiveUnkind, cruel and unfeelingTreating people or animals badlyAngry and displeasedBad-tempered
nastiness noun [U]
(Definition of nasty from the Cambridge Learners Dictionary © Cambridge University Press)
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