expose has 19 distinct synonyms spread across 7 of its 10 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.
expose or make accessible to some action or influence
“Expose your students to art”
make known to the public information that was previously known only to a few people or that was meant to be kept a secret
“The auction house would not disclose the price at which the van Gogh had sold”
expose to light, of photographic film
abandon by leaving out in the open air
“The infant was exposed by the teenage mother”
Synonyms, antonyms and the broader and narrower relations for expose come from Princeton University’s WordNet. Full sources and licences.