Hypothetical (8)
'hypothetical' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for notional that I've seen before include "Theoretical" , "Assumed to be correct for particular purpose, say estimate" , "Existing as theory, not existing in reality" , "Theoretic" , "Imaginary - in on a lot (anag)" .)
(Other definitions for theoretical that I've seen before include "Not linked to practice" , "Hypothetical" , "Cheat toiler (anag) - speculative" , "Academic" , "Not practical; speculative" .)
'hypothetical' is the definition.
(I know that hypothetical can be written as conjectural)
This is all the clue.
(Other definitions for conjectural that I've seen before include "Hypothetical, surmised" , "Involving guesswork" , "Like guesswork" .)
'hypothetical' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for theoretic that I've seen before include "Not practical" , "purely speculative" , "impractical" .)