insulting

abusive, offensive, disparaging, derogatory, hurtful, debasing, degrading, affronting, outrageous, humiliating, scoffing, derisive, contemptuous, disrespectful, insolent, scurrilous, nasty, dyslogistic; see also opprobrious 1, rude 2.

Antonyms respectful*, complimentary, honoring.