harebrain
Usage examples of "harebrain".
I get lost and short of fuel, then I am taken in tow by some moonlighting harebrain with a passion for veteran aircraft flying his own Mosquito through the night, who happens to spot me, comes within an inch of killing me and finally a half-drunk ground-duty officer has the sense to put his runway lights on in time to save me.
I went with my friend, and as soon as the harebrain saw us she fell on Tiretta's neck, calling him dear Count "Six-times"--a name which stuck to him all the time he was at Paris.