They were both on the thin edge of hysteria, he realized.

I laugh, and there is still an edge of hysteria on it.

She could hear the edge of hysteria in her words.

There was an edge of hysteria in her voice, and it stopped Mark before he could say anything else.

There was a cutting edge of hysteria to the moment.

There seemed to be an edge of hysteria in its voice.

The sharp edge of hysteria forced the woman's voice higher.

There seemed to be an edge of hysteria to the voice.

And the raw edge of hysteria in his voice made them all look around.

If he had started, the laugh would have carried an edge of hysteria.