hair-trigger

adjective hair-trig·ger \ ˈher-ˌtri-gər \

Definition of hair-trigger

1 : immediately responsive to the slightest stimulus
  • a hair-trigger temper
2 : delicately adjusted or easily disrupted

First Known Use of hair-trigger

1834


hair trigger

noun

Definition of hair trigger

: a gun trigger so adjusted as to permit the firearm to be fired by a very slight pressure

First Known Use of hair trigger

1802


HAIR-TRIGGER Defined for English Language Learners

hair-trigger

adjective

Definition of hair-trigger for English Language Learners

  • : becoming angry very easily


hair trigger

noun

Definition of hair trigger for English Language Learners

  • : a trigger on a gun that needs very little pressure to cause the gun to shoot


Seen and Heard

What made you want to look up hair-trigger? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

sticky or viscid

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Citation

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!