n o, m. (Lat. auctor). See GOI p. 44 , 574 .

(a) originator, instigator, promoter: ugtar ab augmento , ar donī fēn nī nūa, Corm. Y 1293 . augtor . . . uilc gl. auctorem malorum, Ml. 44d19 . auctair in dana sin (i.e. of magic arts), Trip.² 329 . auctair in deilighthi those responsible for the sedition, CCath. 3260 . a aúctair in báis (to the devil), PH 3927 . is e in spirut-sin is a.¤ do'n labra-sa, 6494 . ughdara gacha earráide, Mac Aingil 6214 .

(b) expert, one practised (in): accaldam auctor ind recto inso gl. scientibus enim legem loquor, Wb. 3c4 (`teachers'). Cf. ugdar (udar v.l.) .i. eolach, O'Dav. 1612 . a.¤ saírsi master wright, LL 3662 . augtair . . . na elathan, LL 219a1 `master-workmen', TTr. 136 . ro ordaigheadar ughdair i n-urthus gacha h-eladna, MR 90.5 . don bhuidhin ughdar wise men, DDána 75.33 .

(c) author, writer, composer (of books, etc.): lasna auctaru `writers', Ml. 35b17 . nach tan do furgaib int augtur brethir for a gin, Hib. Min. 12.410 . auctair ergnaide, SR 50 . augtair ┐ libair aile, LU 5390 . a.¤ inn éolais co n-āeb, ZCP viii 272 § 66 . ic auctaraib na Rōmān, 113.33 . cend na n-áuctor ┐ na ḟátha, LB 137b42 . min-ughdair . . . seach na n-ughdaru toisseacha, Auraic. 58 . ceart rig Laigen roluaid Benen / ar breith ughdair fuarastair, BB 278b8 ( Leb. Cert. 204.14 ). adeitig laisin ugdar, Laws v 92.29 Comm. menma in ugdair, 12.13 Comm. ropu doraidh laisna huctaru na nGáidel cinnas no roinnfitis chrao ┐ díbad, Ériu i 214.3 . deaghúdair, Mac Aingil 5348 . ainm an úghdair, 6199 .

(d) authority: muna bhfuil ughdar agaibh / rét urlabhra . . ., Content. xxii 5 . do nuimhir ┐ d'ughdar aithentadh na hegluisi, Parrth. Anma 2638 .

COMPDS. dál gach ughdair-thim `the man who has no authority on his side', Content. viii 26 . ? augmentum. augtorthórmachtaid fosodain ab augeo , Sg. 65a17 (a. printed as Lat. in Thes.).