The word "wast detestable" is itself an antonym, as "wast" means "was not" or "were not" and "detestable" means "hateful" or "abhorrent". However, some other antonyms for "detestable" could include desirable, pleasant, admirable, or likable. These words oppose the negative connotation of detestable and imply positivity and appeal. To find antonyms for "wast", we could look for words that mean "were" or "was", like existed, occurred, or prevailed. Together, these antonyms could create sentences like "The dessert was delicious, not wast detestable" or "The historical event occurred, not wast forgotten".