insult

nouns

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"

verbs

treat, mention, or speak to rudely
"He insulted her with his rude remarks"; "the student who had betrayed his classmate was dissed by everyone"