For the Yorkshire village, see Crackpot, North Yorkshire.

Crackpot most generally means a capriciously eccentric person. In various other uses, the term can mean:

• Pejoratively, the term Crackpot is used against a person, subjectively also called a crank, who writes or speaks in an authoritative fashion about a particular subject, often in science, but is alleged to have false or even ludicrous beliefs.
• Someone addicted to crack (i.e. a drug addict) also known as a "crackhead."

See also

• Crank (person)

Slang