If you detest something, you dislike it intensely. The word can apply to things and also to people. You might detest your ex-boyfriend and you might also detest rainy Mondays and broccoli.

What does detested mean?

to feel abhorrence of; hate; dislike intensely.

What does it mean to dislike intensely?

to dislike intensely or passionately; feel extreme aversion for or extreme hostility toward; detest: to hate the enemy; to hate bigotry.