From ܓܲܪܒܝܵܐ (garbyā, “north”) + -ܝܐ (-āyā, the attributive adjective ending).
ܓܲܪܒܝܵܝܵܐ • (garbyāyā) (feminine ܓܲܪܒܝܵܝܬܵܐ (garbyāytā), plural ܓܲܪ̈ܒܝܵܝܹܐ (garbyāyē))