i, adj. and subst. (dí + aithber, lit. blameless ). dedbir, Wb. 3b30 , Trip.² 2028 . deidbir, Wb. 6a12 . deithbeir, 33c16 . deithbir , Ml. 38d2 . de(i)thfir, PH . debthir, Auraic. 178 . deithfir f., IGT Decl. § 13 .

I As adj. fitting, proper, reasonable, natural (both of that which is inherently right or meet and of that which might be expected under the circumstances): d.¤ .i. dí aithbir, Corm. Y 15 . d.¤ .i. dlightheach, O'Cl.

(a) Rarely attrib.: inna nnaimtine ṅd.¤ of the just enmities, Ml. 38d2 . ni thechtam serccai acht sercca dethbiri, Alex. 894 .

(b) Usually as pred. with cop. (often unexpressed): is deidbir moídem di suidib, Wb. 17d19 . cani d.¤ , Sg. 3b12 . dethbir dímicim do na hindmassaib talmandaib, PH 5878 . d.¤ ón (sin) that is natural; that might be expected (in confirmation of a preceding statement; often followed by an explanatory sentence introduced by ar, úair): for Cúchulaind uccot, olse, dochuaid rimsa for teithed. Deithber son, ol Medb, ma ranístais daghóic, ní gébad in sirite fri feta, TBC-I¹ 1263 . imsoítis a claidib friu . . . d.¤ ón, ar no labraitis demna friu dia n-armaib, LU 3236 ( SCC 2 ). Cf. TBC-LL¹ 1904 ; LL 30c8 ; PH 4825 , 5194 . is d.¤ dom it is right (proper, natural) for me: is deidbir deit á aigthiu it is reasonable (fitting?) for thee to fear him, Wb. 6a12 . is dedbir am duit thou hast reason, Trip.² 2028 . ba sodeithbir dó, Ériu vi 148.50 . is d.¤ limm I deem it right, fitting , Sg. 3b2 . Followed by appositional clause introduced by cia: is dedbir dúib cid mebul lib a taidmet it is reasonable that ye should be ashamed to call them to remembrance, Wb. 3b30 . deithbeir do ceith aneola that he be ignorant, 33c16 . is d.¤ . . . cid ansa don curp a congbal no wonder that it is hard for the body to contain itself, Mon. Tall. § 60 . d.¤ dóib cid mór a mbríg, LL 276a11 . d.¤ cidh airdirc an fód rightly is the spot celebrated, AFM 915 (poem) (ii 590.12). Followed by neg. clause: is deithber cen cop mór mo thua-sa, LL 275a6 . Compar. deidbiriu, Wb. 6a8 , 9c10 . dethbiri, FA 34 . Adv. in d.¤ gl. merito, Ml. 47b5 .

II As subst. reasonableness, fitness, hence reason, cause: ata dethbir saine sin (text?), Todd Lect. vi 46 . hit é tra dethbiri dosbera in plág fo thír n-Erenn .i. díth cretmi, etc. the reasons, RC xii 426 § 15 . In concrete sense matter: ó díscáiledh na ndethber ó fásann an folt ┐ in uair díscáilter na dethbir sin . . . ní leighester an folt, O'Gr. Cat. 178 .

n f., not found in O.Ir. g s. deithbire, deifreach.

I Distinction, difference: dethbir eter conn ┐ ceill ┐ inntlecht, O'Dav. 755 . in dethbir bias etir na da sruth, Lism. L. 4255 . acht nad fil deffir eturro, LL 30d28 . dethbir ngellta a difference of pledge, Laws ii 138 n. dethfir itir in andsum ┐ in ecmacht the difference between the difficult and the impossible, v 222 Comm. go mbí deithbhir idir phianaibh na bpeacthach, TSh. 6468 . gion go bhfuil in pulsa cruaidh ina dhifir dhiles d'aoinfhiabrus, is mo ata ag an fiabrus etica na ag aonfhiabrus eile differentiating mark, 3 C 19, 250vb15 .

II Haste, hurry (for development of meaning cf. debuith): do aithenset co raibe d.¤ mor fair, Acall. 3013 . re dethbir na dála sin, MR 238 . deithneas ┐ deithbhir do dhéanamh ré triall, TSh. 7749 . g s. fáth deithbhire , 10618 . deithfir, IGT Verbs § 83 .