theoretical

UK: ˌθɪəˈrɛtɪk(ə)l | US: ˌθiːəˈrɛtɪk(ə)l

Definition

  1. adj. relating to or based on theory rather than practical application

  2. adj. hypothetical; not proven or observed in reality

Structure
theor <theory, from Greek *theōria*>etic <adjective suffix, from Greek *-ētikos*>al <adjective suffix, from Latin *-alis*>
Etymology

The word "theoretical" traces back to the Greek theōria (contemplation, speculation), combined with the adjectival suffix -ētikos (pertaining to) and Latin -alis (relating to). It evolved through Late Latin theoreticus and Medieval Latin theoreticālis, eventually entering English in the 16th century. The morphemes reflect a progression from abstract thought (theor) to a descriptive quality (-etic and -al), emphasizing its focus on conceptual rather than practical knowledge.

Examples

  1. The professor’s work is highly theoretical, with little immediate real-world application.

  2. Her argument remained purely theoretical, lacking experimental evidence.

  3. Theoretical physics explores the fundamental laws of the universe.

  4. The model is useful for theoretical analysis but may fail in practice.

  5. They discussed the theoretical implications of the new hypothesis.