From ܬܲܝܡܢܵܐ (taymnā, “south”) + -ܝܐ (-āyā, the attributive adjective ending).
ܬܲܝܡܢܵܝܵܐ • (taymnāyā) (feminine ܬܲܝܡܢܵܝܬܵܐ (taymnāytā), plural ܬܲܝܡܢܵܝܹ̈ܐ (taymnāyē))