adjective (nastier; -est)
Etymology: Middle English
Date: 14th century
1. disgustingly filthy, physically repugnant, indecent , obscene , mean , tawdry ,
4. extremely hazardous or harmful , causing severe pain or suffering , sharply unpleasant ; disagreeable ,
5. difficult to understand or deal with , psychologically unsettling ; trying , lacking in courtesy or sportsmanship , see: dirty nastily adverb nastiness noun nasty noun