insult

(noun) a rude expression intended to offend or hurt. Synonyms: abuse, revilement, contumely, vilification. Examples: "When a student made a stupid mistake he spared them no abuse." "They yelled insults at the visiting team."

(noun) a deliberately offensive act or something producing the effect of deliberate disrespect. Synonyms: affront. Example: "Turning his back on me was a deliberate insult."

(verb) treat, mention, or speak to rudely. Synonyms: diss, affront. Examples: "He insulted her with his rude remarks." "The student who had betrayed his classmate was dissed by everyone."