cult has 7 distinct synonyms spread across 2 of its 5 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.
Synonyms, antonyms and the broader and narrower relations for cult come from Princeton University’s WordNet. Full sources and licences.
followers of an unorthodox, extremist, or false religion or sect who often live outside of conventional society under the direction of a charismatic leader
a religion or sect that is generally considered to be unorthodox, extremist, or false
“it was a satanic cult”
a system of religious beliefs and rituals
“devoted to the cultus of the Blessed Virgin”