From Longman Dictionary of Contemporary Englishcrackpotcrack‧pot /ˈkrækpɒt $ -pɑːt/ noun [countable] informalCRAZYsomeone who is slightly crazy —crackpot adjective
crackpot schemesExamples from the Corpuscrackpot• Though few volunteers were ready to migrate, not everyone thought Turner a crackpot.• You get these crackpot ideas about helping people who come along to you with a mournfultale.Origincrackpot(1800-1900)crack + pot“head”
