Lord Owen, the former British Foreign Secretary, in a BBC interview tonight with Jeremy Paxman used the word 'repercuss' as a verb. It was with reference to President Obama's handshake with Raul Castro at the Memorial Service for Nelson Mandela.
David Owen said 'It is bound to repercuss', presumably meaning 'There are bound to be repercussions'. However, whilst 'repercussion'implies an unfavourable side effect, Owen had been at pains to stress the inevitability of America's due-course normalisation of its relations with Cuba, and other than in the use of this one word he made no suggestion that any harm would come of it.
So what are we to make of 'repercuss' as a verb? The Oxford Dictionary of English doesn't recognise it.