WordNet records no synonym and no antonym for tucson. 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.
a city in southeastern Arizona ringed by mountain ranges; long known as a winter and health resort but the population shift from industrial states to the Sunbelt resulted in rapid growth late in the 20th century
Synonyms, antonyms and the broader and narrower relations for tucson come from Princeton University’s WordNet. Full sources and licences.