n o, s, n. (1 fás) d s. fasaig, LL 264b9 ( MU² 336 ) but g s. regularly fásaig.

I An uninhabited spot or region, a waste, wilderness: Femen indiu cid fásach (: násad), Metr. Dinds. iii 200.1 . is aróen imthéigmís ... cach fid ┐ cach f.¤ , TBC-LL¹ 3531 . slicht sinnaig ... i fasaig, LL 264b9 ( MU² 336 ). dobeiread cella in tíre uli i ḟásach, LB 276b18 = SG 64.5 . an tír uile etir ḟasach ┐ áitiucchadh both waste and inhabited land AFM v 1562.6 . go fassach na hEigipte, Fl. Earls 228.12 . ┐ in tír na fásuch, LL 160a39 (= Dinds. 155 "where the land was a desert"). g s. ic cuairt in fasaig , CCath. 2907 . i n-imchian an fhásaigh, TSh. 639 . As attrib.: disiurt ... .i. locc fássaig .i. roboth and ríam cia rodēracht nunc , Corm. Y 433 (cf. O'Mulc. 495 ). corca fasaig wild oats IT iii 105 § 210 = Bruchst. § 164 . a ssencaislén fásaigh desolate Maund. 33 . Cf. gach baile fassaigh gach fiodh `townland of forest' Duan. F. i 59.22 . fá ḟoraoisibh fásaigh, Keat. ii 6098 . pl. foithri, fássaigi , Acall. 2500 . do rinnedur fasaigi doimne doeoluís da tirthaibh, ZCP vi 294.31 . a fásaighe, a fiadhamla, O'Gr. Cat. 459.5 . g p. ar mét a foithredh ┐ a fhásaighed , BNnÉ 266.24 . d p. i fedaib ┐ fásaigib TBC-LL¹ 554 . a fassaigib, ACL iii 224.18 . fá fhásaighibh fiadhamhla an pheacaidh, TSh. 7456 .

II adj o-ā waste, uninhabited: aran oilén ḟásach, Ériu v 198.626 .