act prematurely or without reflection or too soon; "she wanted to quit her job but her mother told her not to go off half-cocked
go off half-cocked
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() From the days of flintlock and caplock firearms, where the half-cock position of the hammer was both a rudimentary safety, and the proper position for priming the pan or inserting a percussion cap. The phrase was originally rendered, "to go off at half-cock."