Halfcock
Halfcock (-kok`) , transitive verb
To set the cock of (a firearm) at the first notch.
Collocations (1)
To go off half-cocked or To go off halfcocked , (a) To be discharged prematurely, or with the trigger at half cock; -- said of a firearm. (b) To do or say something without due thought or care. [Colloquial or Low]