оскорблять

1) General subject: abuse, affront, blaspheme, cause offence, desecrate, dishonor, dishonour, give offence, heap obloquy upon (кого-л.), hector, huff, humiliate, insult, kick in the teeth (кого-л.), lout (кого-л.), offend, outrage, revile, sling mud, smart (чувства), speak daggers, to be rude to (smb.) (кого-л.), do violence to, violate, call names (обзывать, кого-л.), engage in harassment, hate on smt

2) Colloquial: blister, hassle, diss (treat, mention, or speak to rudely (http://wordnet.princeton.edu/perl/webwn?s=diss))

3) Australian slang: chew the buns off (smb.) (кого-л.), rip into, sling mud at, throw mud at

4) Jargon: clobber, give (someone) hell, (кого-л.) take a dig at someone, (кого-л.) take a jab at someone, mess around with

5) Makarov: do violence to (smth.), hurt, kick (smb.) in the teeth (кого-л.), call names (кого-л.)

6) Taboo: cap on (кого-л.), chew (кого-л.), come down on somebody (см. go down on somebody; кого-л.), put down

7) Phraseological unit: cut down (To insult, to belittle.)