WordNet records no synonym and no antonym for prometheus. It is the only member of its synset, which is common for technical, taxonomic and single-sense vocabulary — there is no other English word that means the same thing. The broader and narrower terms below are the useful relations in that case.
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.
(Greek mythology) the Titan who stole fire from Olympus and gave it to mankind; Zeus punished him by chaining him to a rock where an eagle gnawed at his liver until Hercules rescued him
Synonyms, antonyms and the broader and narrower relations for prometheus come from Princeton University’s WordNet. Full sources and licences.