n dardáin, indecl. Thursday from *etar-dá-óin between two fasts, i.e. between cét-áin and áin diden; hence it never, like cét-áin (g s. cétáine, cétáin), forms a g s. in -áine, dia dardáin being the constant form from the earliest occurrences up to the present day. The accent falls on the ultimate, comp. Bodl. ACC, RC xx 164.1 : teged Colomb cundáil cáin: i teg a ríg cech dardáin. Though dardáin does not seem to occur in Old-Ir. MSS, its appearance in such old texts as the ACC and the Brehon Laws is sufficient proof of its Old-Ir. origin. The e of the unaccented `etar' would naturally assimilate itself to a preceding dé or dia, possibly as early as the early 8th century when dia was still dé.

(a) dé dardáin, dia dardáin on Thursday : de dardain táinic gan mairg: Mongan co carruic Eolairg, Imr. Brain i 87. 8 . cóiced laithe lígaide: dia dardain...ticfet toirne díglaidi on the fifth day, on Thursday SR 8150 . ib. 7699 . dia dardaoin ruccad Fiontan...as dia dardaoin atbath, TFrag. 10. 13 (A.D. 610 in a poem ascribed to Colmán mac Fergusa). ronfuabair dia dardain duind, MR ii 221 . dia dardáin doteigdis luirg: for mag mBreg rais breccda bairdd IT iii 17. 3 . isin chethramad amsir in domain tancatur Gaedil i nHérinn...dia dardain arái lathe sechtmaine, LL 14 b 50 ( Three Hom. 100. 25 ). dia dardáin cablaide, ZCP viii 206. 11 . 'Maunday Thursday' ZCP x 373 . ní loingedh acht dia doṁnaigh ┐ dia dardaoin namá, AFM i 304. 10 . a écc dia dardaoin, ib. iii 420. 15 . RC xiii 429. 7 f.b. dia dh.¤ , BB 33 a 49 . Lism. L. 1437 . dia dardóin cennla on Maundy-Thursday : do uṁalóit dia dhardáin cennla dona senóirib, Lism. L. 1437 . LB 159 a 64 .

(b) indep. of `dia' as an indecl. subst. fem. cédaín is dardaín do saeraib oen diden ┐ satharnd do [f]richnaṁ, Laws iv 216. 5 ; ib. 7. 9 ; 218. 7 , 5 , 3 , 1 f.b. ; in verse, ib. 216. 10 f.b. ; 218. 1 , 7 . isin dardoen ria fél Petair, Mar. Sc. Zeuss 609 n. MacCarthy 15. 5 . féil Brénainn innocht fri dardain, ib. 609 . teged a spirut for nem cech dardain (dardáin LU), Bodl. ACC, RC xx 162. 19 ; ib. § 45 . KMMisc. 255. 6 . dardain Chongalaich na ttriath, AFM ii 658. 16 . onóir ┐ cádus don dardain...úair isin dhardain rochuir Dia a chorp hi nglanrúin bargeni ┐ fína for tús, PH 327 . fail...mórfeisser cecha dardáin ┐ .xii. cacha sathairn duit a pianaib, 116. 12 . cecha dardáin, Three Hom. 36. 2 . for d.¤ , ALC A.D. 1288 . ZCP viii 111. 3 . dardóin mandál (or mbandála) Maundy Thursday, through popular etymology usually written d.¤ mbandála (Meyer). Cf. an ṁandáil the Maundy Maund. § 28 . gacha dardáin mandáil, ZCP ix 248. 4 . d.¤ mbandal aniu, LB 238 c . ag urnaigthi dardain manndála, R.I.A. H 3.18, 557 . dardaoin fresgabhála Ascension Thursday ALC i 136. 8 ; cf. diardaoin deasgabhála id. Donlevy 64. 10 .