Tutoring English, I’m always looking for new words. The tutor brings up notional.

If a notion is an idea, then notional should relate somehow to one. In fact:

notional: existing only as an idea; imaginary

Notional can also describe someone who believes fantasy is real.

I’ve never heard the word used:)

Source:

The Merriam-Webster Dictionary. Springfield: Merriam-Webster, 2004.

Jack of Oracle Tutoring by Jack and Diane, Campbell River, BC.