diddymu

== Welsh == === Etymology === From diddim +‎ -u. === Verb === diddymu (first-person singular present diddymaf) (law) to abolish, to repeal ==== Conjugation ==== === Mutation === === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “diddymu”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies