With the shift in her balance, her feet lost purchase, and she began to slide down.

How hard would she fall, where would she be, if she lost purchase now?

Gripping it with his right hand, his toes lost purchase and for a moment or two he swung over the empty air.

She rocked in his arms as her toes seemed to lose purchase on the floor, and she thought she would fall.

The screaming stopped as the fingers of Allasakar lost purchase.

His fingers lost purchase and he began to fall.

She felt the board lose purchase, slipping downward.

She edged the board off the bridge until it began to lose purchase.

Then her feet lost purchase entirely, and she fell, screaming in an embarrassingly unladylike fashion.

She started climbing it, but the moment her feet got on the coins, they lost purchase.