exploited has 5 distinct synonyms spread across 1 of its 2 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. Its one recorded opposite is unexploited.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
developed or used to greatest advantage
(of persons) taken advantage of
“after going out of his way to help his friend get the job he felt not appreciated but used”
Synonyms, antonyms and the broader and narrower relations for exploited come from Princeton University’s WordNet. Full sources and licences.