turkmēnisks (Latvian) comes from Latvian turkmēnis, from Turkmen Türkmen, from Turkish Türkmen, from Persian ترکمن, from Old Turkic 𐱅𐰇𐰼𐰜, from Proto-Turkic *tür(ü)k — Turk, Turkic people.
turkmēnisks (Latvian): Turkmen