The phrase "a crackpot for" is correct and usable in written English.
It can be used to describe someone who is considered eccentric or has unconventional ideas, often in a negative context.
Example: "He was labeled a crackpot for his outlandish theories about time travel."
Alternatives: "a lunatic for" or "a weirdo for".
But incarcerating a crackpot for three years in 2006 is dangerously counterproductive".
John Ott, a retired banker and a leading photobiologist who directs the Environmental Health and Light Research Institute in Sarasota, Fla., said he has been called "a crackpot" for suggesting experiments on the relationship between color and behavior.
I think that the association of UFOs with aliens is a brilliant strategy by the government in order to create a "laughter curtain", so that people think you're a crackpot for talking about places like Area 51 [a supposed alien base in Nevada].
He's seen a flurry of reaction to his plans, with detractors labeling him a crackpot for planning the launch in a homemade contraption and his belief that the Earth is flat.
In one, Vance DeGeneres (yes, Ellen's brother) interviewed a chainsmoking elderly man who's a crackpot candidate for president this year.
"The scenario for a crackpot pilot being able to do that is within reason," said Leo Janssens, president of the Ohio-based Aviation Safety Institute.
How about this for a crackpot suggestion?
To be sure, the GOP establishment didn't much care for a crackpot like McCarthy (sound familiar?), but, as David Oshinsky points out in his McCarthy biography, A Conspiracy So Immense, Senate GOP leader Robert Taft — "Mr. Conservative" — recognized McCarthy's usefulness and how the party could ride his Red-baiting to electoral victory, so he held his nose and let McCarthy rip.
The place is always bustling, but usually in a good way, with international tourists, local activists and a crackpot or two thrown in for good measure.
John Aldridge freely admits to being "a bit of a crackpot at times", such is his passion for the game.
For the naysayers, it is a crackpot idea with no hope of even getting off the ground.
