Je was op zoek naar: knell (Engels - Wels)

i apologise if that is another death knell for your reputation
ymddiheuraf os yw hynny yn hoelen arall yn arch eich enw da

you must also be aware that the closure of a post office often sounds a death-knell for the village concerned
rhaid eich bod yn ymwybodol hefyd fod cau swyddfa post yn aml yn seinio cnul marwolaeth y pentref dan sylw

when brian moffat took over and decided that he was going to make that merger work , that was the death knell for steel production across wales
pan gymerodd brian moffat yr awenau a phenderfynu ei fod yn mynd i wneud i'r uno hwnnw weithio , dyna oedd dechrau'r diwedd o ran cynhyrchu dur ledled cymru