1. having an excessive concentration on a single object or idea; obsessively focused on one thing

Examples

• His monomaniacal pursuit of perfection made him difficult to work with.
• She had a monomaniacal focus on her career that left little time for relationships.
• The scientist’s monomaniacal dedication to his research paid off with a breakthrough discovery.
• Critics described the director’s monomaniacal attention to detail as both brilliant and exhausting.
• His monomaniacal obsession with collecting vintage cars consumed all his free time.
• The CEO’s monomaniacal drive for profit alienated many employees.