[ˈnɑːsti], (Adjective)

Definitions:
- very bad or unpleasant
(e.g: plastic bags burn with a nasty, acrid smell)

- behaving in an unpleasant or spiteful way
(e.g: Harry was a nasty, foul-mouthed old devil)

- damaging or harmful
(e.g: a nasty, vicious-looking hatchet)


Phrases:
- a nasty one
- a nasty piece of work

Origin:
late Middle English: of unknown origin

[ˈnɑːsti], (Noun)

Definitions:
- an unpleasant or harmful person or thing
(e.g: a water conditioner to neutralize chlorine and other nasties)


Phrases:
- a nasty one
- a nasty piece of work

Origin:
late Middle English: of unknown origin