crackpot[ krak-pot ]SEE DEFINITION OF crackpot
EXAMPLES FROM THE WEB FOR CRACKPOT
So that crackpot, Graham, had finally come up with something definite.
They dismissed him as a crackpot, too, if they heard about him at all.
Therefore, it wouldn't have happened—outside the crackpot fringe.
These had to be investigated—every lousy, crackpot one of them.
Projective telepathy had only been a crackpot's idea back then.
The Navy would not stretch regulations for a crackpot civilian.
Maybe the guy was a crackpot or phony, but it wouldn't hurt to hear his story.
The letter was dismissed as "crackpot," and no precautions were taken.
"This wasn't a crackpot idea," she said, eyeing him as if he were another log for the fire.
Dark eyes rigid, unfocused, behind them Jim's own image of a crackpot redhead who was Callista's friend.