implosion therapy has 1 distinct synonym spread across 1 of its 1 sense. 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.
a technique used in behavior therapy; client is flooded with experiences of a particular kind until becoming either averse to them or numbed to them
Synonyms, antonyms and the broader and narrower relations for implosion therapy come from Princeton University’s WordNet. Full sources and licences.