ar fy nhwca

== Welsh == === Etymology === Literally, "on my knife". === Pronunciation === IPA(key): /ˌar və ˈn̥ʊka/, [ˌarvənˈɦʊkʰa] === Prepositional phrase === ar fy nhwca (idiomatic) really, seriously, on my life === References === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “twca”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies