Wiktionary
vb. (present participle of buoy up English)
Usage examples of "buoying up".
This was no petty family breach, but a catastrophic rift, and we were well aware of it despite the shrill giddiness presently buoying up our hearts.
He was linked so thoroughly to the remotely piloted vehicle that he felt every tremor of her slender frame, every slight gust of air buoying up her gossamer wings.
Back there, he reasoned, there would be creatures a little smaller that the things he had seen buoying up their massive hulks in the sea and marshes.
Luke sent a wave of reassurance to his wife, buoying up the flagging confidence that simmered just beneath her show of determination.
He stumped away into the darkness before they could question him, from which Rod inferred that his 'plan' was limited to buoying up Rod's and Tuan's spirits by insinuating that there was yet hope.