hair triggers

Extremely sensitive mechanisms

Hair triggers are gun triggers requiring minimal pressure to fire, designed for rapid response.

The term extends to anything that activates with slight provocation: hair-trigger reflexes, a hair-trigger temper.

Someone with a hair trigger reacts instantly and intensely to small stimuli—often implying dangerous volatility.

Related

split second · reactivity · activation · fine-tuning · set point · irritability · quick-tempered · on edge · threshold · impulsivity · overreaction · fly off the handle · touchy · volatility · tipping point · precision · knee-jerk · pressure

Opposites
sensitivity/activation threshold

hair triggershard pull

Effortful physical exertion

safety/caution

hair triggerssafety mechanisms

Features preventing unintended operation

fail-safes · trigger guards

EMOTIONAL REACTIVITY (figurative use)

hair triggersequanimity

Unshakable mental steadiness

unflappability · imperturbability · cool heads · patience · composure

Family

hair, trigger, hairs, triggers, haired, hairy, hairier, hairiest, hairiness

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Concrete · Rated PG