1. abominable, execrable, abhorrent, repugnant; invidious, loathsome. Hateful, obnoxious, odious, offensive refer to something that causes strong dislike or annoyance. Hateful implies actually causing hatred or extremely strong dislike: The sight of him is hateful to me. Obnoxious emphasizes causing annoyance or discomfort by objectionable qualities: His persistence made him seem obnoxious. His piggish manners made him obnoxious to his companions. Odious emphasizes the disagreeable or displeasing: an odious little man; odious servility. Offensive emphasizes the distaste and resentment caused by something that may be either displeasing or insulting: an offensive odor, remark.