WordNet records no synonym and no antonym for kuru. 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 progressive disease of the central nervous system marked by increasing lack of coordination and advancing to paralysis and death within a year of the appearance of symptoms; thought to have been transmitted by cannibalistic consumption of diseased brain tissue since the disease virtually disappeared when cannibalism was abandoned
Synonyms, antonyms and the broader and narrower relations for kuru come from Princeton University’s WordNet. Full sources and licences.