WordNet records no synonym and no antonym for cinderella. It is the only member of each of its synsets, 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.
a woman whose merits were not been recognized but who then achieves sudden success and recognition
a fictional young girl who is saved from her stepmother and stepsisters by her fairy godmother and a handsome prince
Synonyms, antonyms and the broader and narrower relations for cinderella come from Princeton University’s WordNet. Full sources and licences.