bolt upright

So why not keep all passengers in the ‘upright position’ when they fly?

In shape it is curved, like those things for candles attached to upright pianos, but with a weighted foot to hold it firm.

Mrs. Ducksmith, who had sat with overwhelmed head in her hands, started bolt upright, and looked at him like one thunderstruck.

He had a flashlight gun in his right hand, and a photographer's tripod was propped upright between his knees.

The sick woman had raised herself upright, and was stretching her arms towards them.

"Take some melon, Mr. Mudge," said we, as with a sudden bolt we recovered our speech and took another slice ourself.