Answer: impetuous

AnswerCrossword Clue
IMPETUOUSHeadlong
IMPETUOUSReckless
IMPETUOUSHotheaded.
IMPETUOUSTrigger-happy, say
impetuoustending to act in a rash or impulsive manner
impetuousActing or done quickly and without thought or care
impetuousMoving forcefully or rapidly