pertaining to or expressing a notion or idea.

of the nature of a notion or idea

a notional response to the question.

abstract, theoretical, or speculative, as reflective thought.

not real or actual; ideal or imaginary

to create a notional world for oneself.

given to or full of foolish or fanciful ideas or moods.

Grammar .

relating to the meaning expressed by a linguistic form.

having full lexical meaning, in contrast to relational.

Semantics . belonging to a class of words that express clear concepts rather than relations between concepts; presentive. Compare relational ( def. 3 ) , symbolic ( def. 4 ) .

adjective

chimeric , chimerical , conceptual , fanciful , fantastic , fantastical , unreal , visionary