notional

no|tion|al /n'oʊʃən^əl/
[ADJ]
Something that is notional exists only in theory or as a suggestion or idea, but not in reality. (FORMAL)
...the notional value of state assets.
= theoretical
● notionally [ADV] ADV with cl/group, ADV with v
...those who notionally supported the republic but did nothing in terms of action...
That meant that he, notionally at least, outranked them all.
= theoretically