fugue has 1 distinct synonym spread across 1 of its 3 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. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
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.
dissociative disorder in which a person forgets who they are and leaves home to create a new life; during the fugue there is no memory of the former life; after recovering there is no memory for events during the dissociative state
a dreamlike state of altered consciousness that may last for hours or days
Synonyms, antonyms and the broader and narrower relations for fugue come from Princeton University’s WordNet. Full sources and licences.
a musical form consisting of a theme repeated a fifth above or a fourth below its first statement