irreplaceable

"I am absolutely clear that no one is irreplaceable," was another pithy expression.

"If you're not living the values, it is clear you leave the BBC or there are consequences," he told MPs on Tuesday, adding that no one was "irreplaceable".

“Still, I’m convinced the Sierra Club is a vital force of nature and truly an irreplaceable pillar in the American environmental movement.”

A further 63% said the energy of live performance was "irreplaceable".

A charity has apologised for the "inexcusable" destruction of around 4,800 personal records linked to adoptions in Scotland, including irreplaceable photographs and handwritten letters from birth parents.