adj o, ā (Lat. acer, Pedersen Vgl. Gr. i 229 , see also Vendr. Lex.). Also achar. sharp, keen, fierce: aicher .i. ab eo quod est acer .i. lainn nō tin[d] nō trēn, Corm. Y 11 . acar .i. aichear ┐ aichear .i. gér, O'Cl. is acher in gáith innocht, Thes. ii 290.4 . nībo fri óigthea acher (.i. fergach no feochur), 328.9 (Hy. v). aithesc aicher , Metr. Dinds. iii 58.46 . siniudh creite impudh a.¤ crocind gergairg, Anecd. i 55 § 40 . acher tra in gres rolaset, LL 403a29 . forgomh amhnas a.¤ do ghae, AFM vi 2216.2 . idu achar (: -athar), Metr. Dinds. iv 2.17 . i nIthu achar (: athar) `in keen [Mag] Itha', Arch. Hib. ii 72 § 30 . gnīm n-achar, 71 § 21 . Of persons: Eogan acher bruth, Rawl. 84a33 . Fiangal find Ailill acher (.i. garg), LL 311c36 . As adv. iachtais co acher ar a sargud do Bresal, LL 358 marg. sup. ba haicher ainmin . . . ro feradh in caitgleo-sin, CCath. 6007 .