ambidextrous has 8 distinct synonyms spread across 2 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 2 recorded opposites are right-handed, left-handed.
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.
equally skillful with each hand
“an ambidextrous surgeon”
marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another
“she was a deceitful scheming little thing”
Synonyms, antonyms and the broader and narrower relations for ambidextrous come from Princeton University’s WordNet. Full sources and licences.