razor edge

But oh, my God, what a razor edge you're walking!

But I also recalled the razor edge of his glare.

The razor edge had touched his arm, and split the skin.

Though he could thank Caesar for honing the razor edge on his mind.

Dangerous dizziness, since a fall here must end upon razor edges.

The razor edge tugged at his shoulder as he spun away.

Most important is that the blade be sharpened to a razor edge.

A real knife-fighter didn't put a razor edge on his weapon.

She seemed balanced on a razor edge between relief and apprehension.

Let them not bring up any more of the recent past than absolutely necessary, till time had a chance to blunt memory's razor edges.