aryan has 2 distinct synonyms spread across 2 of its 3 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
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.
(according to Nazi doctrine) a Caucasian person of Nordic descent (and not a Jew)
a member of the prehistoric people who spoke Proto-Indo European
Synonyms, antonyms and the broader and narrower relations for aryan come from Princeton University’s WordNet. Full sources and licences.
of or relating to the former Indo-European people
“Indo-European migrations”