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§ 77 verbs with stems ending in &#8209;og, as ysgyg D.G. 370 ‘shakes’ (though we have ennic 13 from annoc ‘incite’). In other cases the sound is ig. The late Mn. spellings meddyg, tebyg etc., are purely artificial, deduced from meddỿgon, tebỿgu etc. A few words of this class are still written phonetically, as cerrig.

The sound was ɥ in Early Ml. W. as shown by the rhyme cerryg / plyg C. i 241, and the assonance metic / bid  76 (≡ meẟɥg / bɥd); and ỿ the mutation of ɥ remains in the penult. Hence we have two forms: (1) &#8209;ig for &#8209;ɥg < &#8209;ĭc&#8209;, which becomes &#8209;ỿg- in the penult; (2) &#8209;ig for &#8209;ig < &#8209;īc&#8209;, which is &#8209;ig- in the penult. Thus (1) meddig < Lat. medĭcus, pl. meddỿgon, (2) lleithig < Lat. lectīca, pl. lleithigeu. In Mn. W. one or two words of the second class have passed over to the first: perigl ‘danger’ < Lat. perīc’lum; cynnig ‘to offer’ < Lat. condīco, though still sounded perigl, cynnig are written perygl, cynnyg because, by false analogy, derived forms have come to be sounded with ỿ as perỿglus, cỿnỿgi̯af. In Ml. W. the penult had i in these, as periglwys 44–5, periglus Ỻ.A. 146, berigleu  121, gynigwyt  168, gynnigẏwyt  234, kynnigẏwys do. 144.

ɥ becomes i in the unaccented ult. in some cases after g or ng; thus ergyt 110, 111 ‘shot’; ergit  80, 81,  42, now ergid (written ergyd); efengil R.Ỻ.,  5, E.P. 278 ‘gospel’; so sounded now though written efengyl; megis / dis, D.G. 315; cregin for *cregyn. But as a rule ɥ remain ; egyr ‘opens’, diogyn ‘idler’, negydd ‘denier’, dengys ‘shows’, are so pronounced, owing to the influence of analogical forms without g or ng.

In the same position ɥ frequently becomes i after penultimate i or ei; thus llinɥn 75 ‘string’, but llinin four lines earlier, also 78, llinin  54, 56 (each time), dibin  91 ‘hang’, amẟiffin  21/1  ‘to defend’, gwlithin  455,  102 ‘dewdrop’, giliẟ  9, 134 ‘other’, origin Ỻ.A. 122 ‘a moment’, (double dim. of awr ‘hour’), dilin  343 ‘to follow’.


 * Derfel wrth ryfel a thrin
 * Dewr oedd, a da i wreiddin.—D.I.D., 178.

‘He was a brave Derfel in war and encounter, and of good stock.’


 * Herwydd nas gwnai ddyhirin
 * Fentri̯o i oes o fewn trin.—S.T., 369.

‘Because a dastard would not risk his life in battle.’

But analogy has always tended to preserve the termination &#8209;yn:


 * Ysbys y dengys y dŷn
 * O ba radd y bo i wreiddɥn.—T.A., 33.

‘Plainly does a man show of what degree his origin is.’


 * O chyrch dyrfa, deca’ dŷn,
 * Daw i’w harail dihirɥn.—D.G., 173.

‘If she hies to a gathering, fairest maid, a knave comes to watch her.’