Noun

• S: (n) Aryan, Indo-European (a member of the prehistoric people who spoke Proto-Indo European)
• direct hypernym / inherited hypernym / sister term
• derivationally related form
• S: (n) Indo-European, Indo-European language, Indo-Hittite (the family of languages that by 1000 BC were spoken throughout Europe and in parts of southwestern and southern Asia)

Adjective

• S: (adj) Indo-European, Indo-Germanic (of or relating to the Indo-European language family)
• pertainym
• S: (adj) Indo-European, Indo-Aryan, Aryan (of or relating to the former Indo-European people) "Indo-European migrations"