WordNet records no synonym and no antonym for capacitate. 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.
make legally capable or qualify in law
cause (spermatozoa) to undergo the physical changes necessary to fertilize an egg
make capable
“This instruction capacitates us to understand the problem”
Synonyms, antonyms and the broader and narrower relations for capacitate come from Princeton University’s WordNet. Full sources and licences.