gweithredwr

== Welsh == === Etymology === From gweithredu (“to enact, to execute, to effect”) +‎ -wr (“-er, -or”). === Noun === gweithredwr m (plural gweithredwyr) agent, doer, enactor, executor, operator ==== Derived terms ==== prif weithredwr (“chief executive officer”) === Mutation === === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “gweithredwr”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies