No, it is not. It is the past tense and past participle of the verb (to detest) and can be used as an adjective (e.g. a detested chore).
A detested person is called a pariah, a detested person, idea, or thing is called an anathema.
The word "detested" is a past participle form of the verb "detest." Therefore, it is a verb.
hated
picasso
Hated
it means hate. ( :
Hated, disliked or detested.
Detested, loathed, despised.
try anathema
No. The olympics.
loathed, detested, despised, disliked, abhorred, execrated;
Molested, requested, digested, arrested, blessed, sequestered, selected ...