Crackpot

To suggest as much might get someone labeled a crackpot, a kook, someone that's "bored with their suspension."

To suggest as much might get someone labeled a crackpot, a kook, someone that's "bored with their suspension."

— Brooklyn Nine-Nine S8E7

I will not pay to have a crackpot old fool teach him magic tricks.

I will not pay to have a crackpot old fool teach him magic tricks.

— Harry Potter and the Sorcerer's Stone

Anything other than the usual shut-ins and crackpots?

Anything other than the usual shut-ins and crackpots?

— Modern Family S1E4

I don't know what the hell these other crackpots are doing.

I don't know what the hell these other crackpots are doing.

— Parks and Recreation S4E19

just because some crackpot undermined his confidence.

just because some crackpot undermined his confidence.

— Suits S8E2

...instead of wasting our time with crackpot, wannabe theoreticians in a rush to publish.

...instead of wasting our time with crackpot, wannabe theoreticians in a rush to publish.

— The Big Bang Theory S8E14

Why on earth would you bring this crackpot into my lab?

Why on earth would you bring this crackpot into my lab?

— Young Sheldon S5E5