WordNet records no synonym and no antonym for tagalog. 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 a people native to the Philippines chiefly inhabiting central Luzon around and including Manila
the language of the Tagalog on which Filipino is based
Synonyms, antonyms and the broader and narrower relations for tagalog come from Princeton University’s WordNet. Full sources and licences.