FOOLHARDY

[adjective] - foolishly brave, taking unnecessary risksSailing the Atlantic in such a tiny boat wasn't so much brave as foolhardy.He made a foolhardy attempt to climb the tree in order to rescue the kitten.She is foolhardy enough to risk all her money on this crazy scheme.It would be foolhardy to try and predict the outcome of the talks at this stage.It was foolhardy of you to try and climb that mountain.