uffern o

== Welsh == === Alternative forms === uffarn o, uffar o, yffach o === Adjective === uffern o (vulgar) helluva (intensifier) Oedd na yffach o ddim ar y teledu neithiwr. ― There was sod-all on television last night. === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “uffern”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies