B1bad or very unpleasant: a nasty shock/surpriseThere's a nasty smell in here.He had a nasty cut above the eye.She has a nasty habit of picking on people in meetings.Serious and unpleasantNot attractive to look atInformal words for badB1unkind: Don't be so nasty toyourbrother - he's four yearsyounger than you!Unkind, cruel and unfeelingViolent or aggressiveTreating people or animals badlyInsults and abuseB2dangerous or violent: In an emergency you could get out through a window, but it would be a nasty drop.The situation could turn(= become) nasty at any moment.Dangers and threats›rude or offensive: She said some quite nasty things about him.Serious and unpleasantNot attractive to look atInformal words for badhave a nasty feeling›to think that something bad is likely to happen or to be true: I've got a nasty feelingthat I forgot to tellJoe I couldn't come.Predicting things and intuitionnastily
/ˈnɑː.stɪ.li//ˈnæs.tɪ-/adverb›He laughed nastily (= unkindly) and walked away.Unkind, cruel and unfeelingViolent or aggressiveTreating people or animals badlyInsults and abusenastiness
/-nəs/noun[U]Serious and unpleasantNot attractive to look atInformal words for bad