adj io, iā. also múchna (form due to influence of múch?). The sense in O.Ir. appears to be austere, strict, stern , passing into that of crossgrained, surly, hard to deal with , later gloomy, moody . mucnae, gl. austera [severitas], Ml. 109a3 . pl. inna mmúcnai .i. inna imneda (gl. austera neut. pl.), 95c5 . múcni (gl. austera), Thes. i 486.35 ( Tur. 38 ). arndib múcnae . . . a n-étach ┐ a mbiad (= austeram vitam praedicantium), 489.29 ( Tur. 71 ). múchni (leg. múcni), gl. protervi, Wb. 30c10 (= head-strong?). muchna ainm do ghruaim gan ghean, Metr. Gl. 25 § 22 . mucna .i. gruaim, O'Cl. Muiredach muchna .i. M. gruamdai, BB 253a20 . mucna cach mog, Tec. Corm. § 13.16 (` morose, truculent ', Meyer Gloss.). gnúsi na ndemna mucna, PH 4324. Of animals: muc .i. mucna a haigned, ar ni geib a munad o neoch stubborn, refractory (?), Corm. Y 903. borb . . . mucna matnamail (of a hound), TBC-LL¹ 1011. Of places, etc. gloomy, dismal: i nglennaib dubaib . . . muchna muichnig . . . ichtaraig ifirn, FA 30 LB ( IT i 191.28 ). hi tégdais . . . muchna mallachtnach (of Hell), PH 8299. co clóthib nemi muchnai marbthaig, 8304 . i n-aidhchi . . . marbthaigh mucna iffirn, BNnÉ 99 § 9 , cf. Lism. L. 3642. dirae mucnai, O'Mulc. 207. As subst. pl. ? mortlaid . . . i mbiat múcna in tṡlúaig, ZCP xiii 381.27 .