n u, o, m. (faitech) O. Ir. n s. (a) fatigus, Ériu vii 138.24 . a s. faitigus, Ml. 36a23 . fatigus 115a11 . (b) faitches, IGT, Decl. § 38 . (c) faitechus, Laws v 508.22 Comm. g s. faitchessai, Corm. Y 1184 . faitcheasa, IGT, Decl. ex. 1058 . TSh. 6770 . faitcis, TTebe 327 v.l.

(a) caution, heedfulness, being on one's guard: gl. cautio Ml. 36a23 . 115a11 . faitiges i n-uathad, ZCP iii 25.29 = fatigus, Ériu vii 138.24 . fó dúib fatchius ┐ fót, TBC-LL¹ 504 . ni ró ḟég Fergus dar a ais riam ... ar nad ráided nech ba fatchius dó fégad dar a eiss, 1906 . is coir dó imecla ┐ faitchius, PH 4115 . co ro imgaibe nech ... guasachta in tshaegail tria fhaitches ┐ tria threbaire, 4861 . atrubairt fri firu hErend faitchius inn aidche sin to be on their guard that night TBC-LL¹ 1468 . déni fatchius be cautious 1495 . dia fessaind, con [leg. no] beind 'na fatchius I should have been on my guard against them 933 . bíd cách i faitces a fóit, Corm., Thr. Ir. Gl. 21 s.v. fót. as cōir bheith 'na fhaitchius, áir bidh mairg donti dogena a aimreir, Lism. L. 2011 . in ti ac na bi faitechus ceille co comlan, in mac bec (i.e. who is not fully able to look out for himself), Laws v 508.22 Comm. Cf. o firmeisemnaigter fine maithri beth a faitchius ris `that the tribe ... are cognizant of it' iv 44.21 Comm . faitchius duit frisin mnai be careful of (= guard carefully) the woman Ériu xii 152.6 .

(b) anxiety, apprehension: do ghabh faitchios an rígh roimpe, ML 4.17 . faitches na breithe aithrighe do chuirfeadh an t-oide ... ar an bpeacthach anxiety about the penance the confessor would impose TSh. 7448 . d'fhaitcheas ... go leanfadaois sompladha a sean (= ne ... exempla ... consequerenter) for fear lest 5334 . uaimhneach ... d'fhaitcheas na colna in fear on account of the flesh 2106 . a dhéanamh do dhruim fhaitcheasa (ref. to servite Domino in timore) 6770 . maille ré faitcheas agus ré criothnughadh, 2 Cor. vii 15 . a haithli atchis (ḟaitcis v.l.) na haidchi, TTebe 327 .