1. plural of monomania; excessive concentrations on single ideas or subjects
Usage: psychology; formal

Examples

• The professor’s various monomanias included collecting vintage typewriters and studying medieval poetry.
• His monomanias often interfered with his ability to focus on daily responsibilities.
• The artist’s monomanias with color theory and geometric patterns dominated her work.
• Psychologists studied the patient’s shifting monomanias over several years.
• Her monomanias for perfection made simple tasks take hours to complete.
• The detective’s monomanias with unsolved cases kept him working late every night.