gwaelu

== Welsh == === Etymology === Denominative of gwael. === Verb === gwaelu (first-person singular present gwaelaf) (ambitransitive) to become ill, sicken, grow faint, ail to become worse, weaken, decay to debase, lower (oneself, etc.), become wretched === Mutation === === References === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “gwaelu”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies