a tough/hard nut
someone who is very unpleasant and difficult to deal with:
As a teenager, Jack was a real hard nut, always getting into fights.
Thesaurus: synonyms and related words
Unpleasant people in general
- a dog in the manger idiom
- a nasty piece of work idiom
- a wolf in sheep's clothing idiom
- bad lot
- barracuda
- know-all
- know-it-all
- leech
- make sb's skin crawl idiom
- malcontent
- rotter
- runt
- sadist
- scum
- scumbag
- undesirables
- vermin
- villain
- villain of the piece idiom
- viper
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