[noun] a rude expression intended to offend or hurt; "when a student made a stupid mistake he spared them no abuse"; "they yelled insults at the visiting team" Synonyms:abuse, revilement, contumely, vilification
[noun] a deliberately offensive act or something producing the effect of an affront; "turning his back on me was a deliberate insult" Synonyms:affront
[verb] treat, mention, or speak to rudely; "He insulted her with his rude remarks"; "the student who had betrayed his classmate was dissed by everyone" Synonyms:diss, affront