write has 6 distinct synonyms spread across 5 of its 8 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.
Synonyms, antonyms and the broader and narrower relations for write come from Princeton University’s WordNet. Full sources and licences.
communicate or express by writing
“He wrote about his great love for his wife”
mark or trace on a surface
“The artist wrote Chinese characters on a big piece of white paper”
create code, write a computer program
“She writes code faster than anybody else”