WordNet records no synonym and no antonym for punkah. 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 large fan consisting of a frame covered with canvas that is suspended from the ceiling; used in India for circulating air in a room
Synonyms, antonyms and the broader and narrower relations for punkah come from Princeton University’s WordNet. Full sources and licences.