insult
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”
a deliberately offensive act or something producing the effect of deliberate disrespect
“turning his back on me was a deliberate insult”
Synonymsaffront
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”
Source: WordNet 3.1, Princeton University