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252 kymoneẟ ib. ‘as noble’ (boneẟ ‘nobility’); kyvoet do. 27 ‘of the same age’; cyfryw ‘of the same kind, such’.

In one or two cases the second element no longer exists in its simple form either as a noun or adj.: cyfred ‘as swift’ (rhedeg to run’); cyfref ‘as thick’ (rhefedd ‘thickness’).

Compounds of un- ‘one’ also form the equivalents of equative adjec&shy;tives: unlliw a D.G. 17 ‘of the same colour as’; neb un fodd § 148 i (6), ‘any one like’ (modd ‘manner’), unwedd a ‘like’, etc.

Most adjectives may be compared regularly, including—

Many derivatives in ‑aidd, ‑ig, ‑in (not denoting substance), ‑og, ‑us; as peraidd ‘sweet’, eqtv. cyn bereidd&shy;ied, cpv. pereidd&shy;iach, spv. pereidd&shy;iaf; so pwysicaf ‘most important’, gerwinaf ‘roughest’, cyfoeth&shy;ocaf ‘richest’, grymusaf ‘mightiest’. But those contain&shy;ing more than two syllables are mostly compared periphras&shy;tically.

Verbal adjectives in ‑adwy, ‑edig are not compared (except periphras&shy;tically), though caredig ‘kind’, no longer felt as a verbal adj., is, e.g. caredicaf ‘kindest’. Adjec&shy;tives in ‑ol are rarely compared; those in ‑aid, ‑in denoting material, and in ‑lyd are not compared.

Compounds in which the second element is an adjective; as gloyw-ẟúaf Ỻ.A. 93 ‘of a most glossy black’, llathɏr-wýnnaf ib. ‘most lustrous&shy;ly white’, klaer-wýnnaf ib. ‘most brilliant&shy;ly white’, cyn vlaen-llýmet&#8203;…&#8203;blaen-llýmaf 176 ‘as sharply pointed&#8203;…&#8203;most sharply pointed’.
 * Dwy fron mor wynion a’r ōd,
 * Gloyw̯-w̯ýnnach na gwylanod.—D.G. 148.

‘Two breasts as white as snow, more luminously white than sea-gulls.’

But when the second element is an adj. compared irregularly, the compound cannot be compared, as maléis-ddrwg, troed-lýdan, pen-úchel, etc. A few of these may, however, be compared by adding the endings to derived forms, as gwerth-fawr ‘valuable’, spv. gwerth&shy;vawrussaf Ỻ.A. 80, or gwerth&shy;fawrocaf; clód-fawr ‘cele&shy;brated’, spv. clod&shy;forusaf. (G.M.D. has gwerth&shy;voraf 1195, an unusual form.)

i. Adjectives which cannot take the endings of comparison as above may be compared periphras&shy;tically, by placing before the positive mor, mwy, mwyaf, to form the eqtv., cpv., spv.