Nasty meaning: Nasty definition

Nasty definition : physically filthy; disgustingly unclean.. See examples of NASTY used in a sentence. Nasty is an adjective used to describe something unpleasant, offensive, or harmful. Synonyms: Unpleasant, Mean , Harmful, etc. Definition of nasty adjective in Oxford Advanced Learner's Dictionary. Meaning , pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. There was a nasty period during the First World War when the family's allegiance was called into question - not least because one of the Schroders had been made a baron by the Kaiser.