leper lily has 4 distinct synonyms 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.
Eurasian checkered lily with pendant flowers usually veined and checkered with purple or maroon on a pale ground and shaped like the bells carried by lepers in medieval times; widely grown as an ornamental
Synonyms, antonyms and the broader and narrower relations for leper lily come from Princeton University’s WordNet. Full sources and licences.