spur

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Related to on the spur of the moment: thick and fast, pillar to post
References in classic literature ?
Nan Bellayne," she invented on the spur of the moment.
This was the best pretext I could think of, on the spur of the moment, to account for my visit.
Indeed, sir,' said I, 'her affairs are so changed, that I wished to ask you whether it would be possible - at a sacrifice on our part of some portion of the premium, of course,' I put in this, on the spur of the moment, warned by the blank expression of his face - 'to cancel my articles?