Noun

• S: (n) Aryan, Indo-European (a member of the prehistoric people who spoke Proto-Indo European)
• 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)
• direct hyponym / full hyponym
• direct hypernym / inherited hypernym / sister term
• S: (n) natural language, tongue (a human written or spoken language used by a community; opposed to e.g. a computer language)
• S: (n) mother tongue, maternal language, first language (one's native language; the language learned by children and passed from one generation to the next)
• S: (n) tone language, tonal language (a language in which different tones distinguish different meanings)
• S: (n) creole (a mother tongue that originates from contact between two languages)
• S: (n) Amerind, Amerindian language, American-Indian language, American Indian, Indian (any of the languages spoken by Amerindians)
• S: (n) Eskimo-Aleut, Eskimo-Aleut language (the family of languages that includes Eskimo and Aleut)
• S: (n) Chukchi, Chukchi language (an indigenous and isolated language of unknown origin spoken by the Chukchi that is pronounced differently by men and women)
• S: (n) Sino-Tibetan, Sino-Tibetan language (the family of tonal languages spoken in eastern Asia)
• S: (n) Austro-Asiatic, Austro-Asiatic language, Munda-Mon-Khmer (a family of languages spoken in southern and southeastern Asia)
• S: (n) Hmong, Hmong language, Miao (a language of uncertain affiliation spoken by the Hmong)
• S: (n) Austronesian, Austronesian language (the family of languages spoken in Australia and Formosa and Malaysia and Polynesia)
• S: (n) Papuan, Papuan language (any of the indigenous languages spoken in Papua New Guinea or New Britain or the Solomon Islands that are not Malayo-Polynesian languages)
• S: (n) Khoisan, Khoisan language (a family of languages spoken in southern Africa)
• 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)
• S: (n) Ural-Altaic (a (postulated) group of languages including many of the indigenous languages of Russia (but not Russian))
• S: (n) Basque (the language of the Basque people; of no known relation to any other language)
• S: (n) Elamitic, Elamite, Susian (an extinct ancient language of unknown affinities; spoken by the Elamites)
• S: (n) Kassite, Cassite (an ancient language spoken by the Kassites)
• S: (n) Caucasian, Caucasian language (a number of languages spoken in the Caucasus that are unrelated to languages spoken elsewhere)
• S: (n) Dravidian, Dravidic, Dravidian language (a large family of languages spoken in south and central India and Sri Lanka)
• S: (n) Afroasiatic, Afro-Asiatic, Afroasiatic language, Afrasian, Afrasian language, Hamito-Semitic (a large family of related languages spoken both in Asia and Africa)
• S: (n) Niger-Kordofanian, Niger-Kordofanian language (the family of languages that includes most of the languages spoken in Africa south of the Sahara; the majority of them are tonal languages but there are important exceptions (e.g., Swahili or Fula))
• S: (n) Nilo-Saharan, Nilo-Saharan language (a family of East African languages spoken by Nilotic peoples from the Sahara south to Kenya and Tanzania)

Adjective

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