obscure has 23 distinct synonyms spread across 10 of its 11 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.
marked by difficulty of style or expression
“much that was dark is now quite clear to me”
Synonyms, antonyms and the broader and narrower relations for obscure come from Princeton University’s WordNet. Full sources and licences.
reduce a vowel to a neutral one, such as a schwa