1. a person who forms theories or engages in theoretical speculation

Examples

• The professor was known as a brilliant theorizer who could explain complex concepts.
• She’s more of a theorizer than someone who gets her hands dirty with experiments.
• The ancient Greek theorizers laid the foundation for modern philosophy.
• As a theorizer, he spent hours contemplating abstract mathematical problems.
• The conference brought together theorizers and practitioners from various fields.
• Critics called him an armchair theorizer who lacked real-world experience.