nasty

nasty
nas‧ty S2 /ˈnɑːsti $ ˈnæsti/ adjective (comparative nastier, superlative nastiest)1.  BEHAVIOUR nasty behaviour or remarks are extremely unkind and unpleasant:
    a nasty temper
    the nasty things that were being written about her
    There’s a nasty streak in her character.
    Drivers often have a nasty habit of driving too close to cyclists.
    nasty to
    Don’t be so nasty to your mum (=do not treat her unkindly).
    get/turn nasty especially British English (=suddenly start behaving in a threatening way)
    When Harry refused, Don turned nasty and went for him with both fists.
2.  PERSON someone who is nasty behaves in an unkind and unpleasant way:
    I went to school with him – he was nasty then and he’s nasty now.
    You’re a nasty little brute!
3.  EXPERIENCE/SITUATION a nasty experience, feeling, or situation is unpleasant
    nasty shock/surprise
    It gave me a nasty shock.
    nasty feeling/suspicion
    I had a nasty feeling that a tragedy was going to happen.
    Life has a nasty habit of repeating itself.
    He had a nasty accident while riding in the forest.
    When you feel you’ve been cheated, it always leaves a nasty taste in the mouth (=makes you feel upset or angry afterwards).
    The weather turned nasty towards the evening.
4.  SIGHT/SMELL ETC having a bad appearance, smell, taste etc:
    What’s that nasty smell?
    a market stall selling cheap and nasty watches
5.  INJURY/ILLNESS severe or very painful:
    a nasty cut
    He was carried off the field with a nasty injury.
6.  SUBSTANCE a nasty substance is dangerous:
    nasty chemicals
7. a nasty piece of work British English someone who is dishonest, violent, or likely to cause trouble
—nastily adverb
—nastiness noun [uncountable]
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