couldn't stand

• hatedRegarded with intense dislike
• loathedIntensely hated
• despisedIntensely disliked, held contemptible
• detestedIntensely disliked
• abhorredFelt intense revulsion toward

unbearable · intolerable · repulsed · disgusted · sickened · revolted · nauseated · fed up · had enough · got under skin · irritated · annoyed · repelled · allergic · aversion · bitter · resentful · endure