steroidal has no recorded synonym. 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. Its one recorded opposite is nonsteroidal.
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.
of or relating to steroid hormones or their effects
Synonyms, antonyms and the broader and narrower relations for steroidal come from Princeton University’s WordNet. Full sources and licences.