hair-trigger

It is self-love inflamed to the acute point; conceit, with a hair-trigger.

It merely exploded him into action like a finger on a hair-trigger.

I then got a new dog and chained him, and a duelling pistol, with a hair-trigger.

As he was not a thoroughbred, his nerves were not of the hair-trigger order.

Every nerve was at tension, each muscle set at hair-trigger.

Them fellers air allus on a hair-trigger when a mortgage falls in.

Revel's reflexes were still, if not hair-trigger, at least very quick.

Only the weight of the forefinger was needed to spring the hair-trigger.

“My nerves are on a hair-trigger these days,” Martin apologized.

I see you also have been doing some 'hair-trigger, steel-trap, cocksure jedgin'.'