WordNet records no synonym and no antonym for miami. 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 member of the extinct Algonquian people formerly living in northern Indiana and southern Michigan
a city and resort in southeastern Florida on Biscayne Bay; the best known city in Florida; a haven for retirees and a refuge for Cubans fleeing Castro
Synonyms, antonyms and the broader and narrower relations for miami come from Princeton University’s WordNet. Full sources and licences.