spoken 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 written.
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.
uttered through the medium of speech or characterized by speech; sometimes used in combination
“a spoken message”
Synonyms, antonyms and the broader and narrower relations for spoken come from Princeton University’s WordNet. Full sources and licences.