Words: notional [MW]

Function: adjective
1 : THEORETICAL, SPECULATIVE
2 : existing in the mind only : IMAGINARY
3 : given to foolish or fanciful moods or ideas
4 a : of, relating to, or being a notion or idea : CONCEPTUAL b (1) : presenting an idea of a thing, action, or quality "has is notional in he has luck, relational in he has gone" (2) : of or representing what exists or occurs in the world of things as distinguished from syntactic categories