cyflymu

== Welsh == === Etymology === From cyflym (“fast”) +‎ -u. === Pronunciation === (North Wales) IPA(key): /kəvˈləmɨ̞/ (South Wales) IPA(key): /kəvˈləmi/ Rhymes: -əmɨ̞ === Verb === cyflymu (first-person singular present cyflymaf) (ambitransitive) to speed up, accelerate Antonym: arafu ==== Derived terms ==== cyflymiad (“acceleration”) cyflymwr, cyflymydd (“accelerator”) === Mutation === === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “cyflymu”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies