affeithiad

== Welsh == === Etymology === affeithio (“to cause to undergo vowel or consonant affection”) +‎ -ad === Pronunciation === IPA(key): /aˈfei̯θjad/ === Noun === affeithiad m (plural affeithiadau) (phonetics) consonant or vowel affection ==== Usage notes ==== A morphologically derived deverbal noun, such as this entry, is a countable noun. The corresponding uncountable verbal noun is attained in Welsh by employing the verbnoun or dictionary form of the related verb as a masculine singular noun. === Mutation === === References === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “affeithiad”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies