1. people who have strange or crazy ideas; eccentric or mentally unbalanced individuals
Usage: informal; often derogatory

Examples

• The town was full of harmless crackpots who believed in conspiracy theories.
• Don’t listen to those crackpots who claim the moon landing was fake.
• Some people dismissed the inventor as one of many crackpots, but his idea actually worked.
• The internet has given crackpots a platform to spread their bizarre theories.
• My neighbor is one of those crackpots who thinks aliens visit his backyard.
• The professor was tired of dealing with crackpots who challenged established science with nonsense.