foolhardy \ˈ ̷ ̷ˌ ̷ ̷ ̷ ̷\adjective (-er/-est) Etymology: Middle English folhardy, foolhardy, from Old French fol hardi, from fol foolish + hardi bold, brave — more at fool, hardy : daring but lacking judgment : foolishly adventurous and bold : exhibiting or characterized by lack of regard for foreseeable or avoidable danger < a foolhardy dive into shallow water > < since I had been so foolhardy as to come ashore with these desperadoes — R.L.Stevenson > Synonyms:see adventurous