a.
1.
Aggressive, assailant, attacking, invading.
2.
Disgusting, nauseating, nauseous, sickening, loathsome, repulsive.
3.
Disagreeable, unpleasant, unpalatable, displeasing, revolting, shocking, abominable, detestable, hateful, execrable, obnoxious.
4.
Irritating, disagreeable, unpleasant, impertinent, rude, saucy, opprobrious, insolent, insulting, abusive.