WordNet records no synonym and no antonym for solmizate. 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.
sing by the syllables of solmization
“solmizate a song before you learn the lyrics”
sing using syllables like `do', `re' and `mi' to represent the tones of the scale
“The voice teacher showed the students how to solmizate”
Synonyms, antonyms and the broader and narrower relations for solmizate come from Princeton University’s WordNet. Full sources and licences.