Dictionary
trig•ger-hap•py
Pronunciation: (trig'ur-hap"ē), [key]—
adj. Informal.
1. ready to fire a gun at the least provocation, regardless of the situation or probable consequences:
a trigger-happy hunter.
2. heedless and foolhardy in matters of great importance and recklessly advocating action that can result in war:
Some called him a trigger-happy candidate.
3. eager to point out the mistakes or shortcomings of others; aggressively or wantonly critical:
He's a trigger-happy editor with a nervous blue pencil. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.