adweithiwr

== Welsh == === Etymology === From adweithio (“to react”) +‎ -wr. === Pronunciation === IPA(key): /adˈwei̯θjʊr/ === Noun === adweithiwr m (plural adweithwyr) reactionary === Mutation === === References === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “adweithiwr”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies