blwydd means ‘a year of one’s age’ or adj. ‘year old’ pl. blwyddiaid, § 145 iii Note, teirblwydd ‘three years old’, pymtheg̃mlwyẟ r.b.b. 185 ‘fifteen years old’, etc. The use by recent writers of blwydd for ‘year’ is as foreign to the spoken language as it is to the literary tradition, and the forms blwyddau, blwyddi for ‘years’ are pure fabrications.
(3) ‑edd, later replaced by ‑ydd, was added to *chwïor < *su̯esores, the pl. of chwaer ‘sister’, as chwioreẟ Ỻ.A. 38, r.b.b. 39, w.m. 158; in the last passage chwioryẟ in r.m. 226; Mn. W. chw̯ïóredd T.A., Wm.S., later only chw̯ïórydd; § 75 vi (2).
t-stems.
§ 123. i. ‑ed < Brit. *‑etes occurs in merched ‘daughters’, Ml. W. merchet w.m. 469, merched (d ≡ d) 468; pryfed ‘worms’, Ml. W. pryved (d ≡ d) b.b. 81. D.G. has hued 30, 93 ‘hounds’ (sg. huad W.Ỻ. 166, O.G. c 82 s.v.). In Ml. W. we also have guystviled b.b. 53 ‘beasts’; and in O. W. ætinet brounbreithet ox. gl. cicadae.
The stem-form is seen in Gaul. Cing-es, gen. ‑etos, and Nemetes ‘nobiles?’ beside the ‑eto- stem in nemeto- ‘temple’. As it seems to have been used to form names of persons it may be original in merch, which would so be from *merke(s)s < *merkets (pl. *merketes) < *mer(i)k-et‑: Skr. maryakáḥ § 101 iv (1), √merēi̯- § 125 v (1).—pryf is an old i-stem § 61 i (1), ending therefore in *‑es (< *‑is), which seems to have been mistaken for *‑e(s)s < *‑ets.
ii. ‑od, Ml. W. ‑ot < Brit. *‑otes occurs in llygod ‘mice’, sg. llyg (< *lukō(s)s) and llygoden (Ir. luch ‘mouse’, gen. lochad, Bret. logodenn, pl. logod): Gaul. Lucot-ios, Λουκοτ-ικνος.
The above is an example of the survival in W. of Brit. ‑ot- as seen by its cognates; but the ending ‑od became fertile in the formation of new plurals. It was added to diminutives, and forms with gemination, which is a peculiarity of child language, and of names of animals § 93 iii (2).
(1) It was added to most names of animals: llewot w.m. 229, Ỻ.A. 165 ‘lions’, now llewod; eryrot Ỻ.A. 167 ‘eagles’, now eryrod; llydnot r.m. 52, w.m. 73, now llydnod, sg. llwdn ‘pullus’; hyẟot w.m. 158, now hyddod ‘stags’; gwiberot do. 229, now gwiberod ‘vipers’; ednot Ỻ.A. 130, now ednod ‘birds’ (also ednaint, § 121 iv, and in O. W. ætinet i above). In Mn. W.
