1. (

• fanciful ,
• imaginary ,
• notional

) not based on fact; existing only in the imagination; "the falsehood about some fanciful secret treaties"- F.D.Roosevelt; "a small child's imaginary friends"; "to create a notional world for oneself" ;

2. (

• notional ,
• speculative

) not based on fact or investigation; "a notional figure of cost helps in determining production costs"; "speculative knowledge" ;

3. (

• fanciful ,
• notional

) indulging in or influenced by fancy; "a fanciful mind"; "all the notional vagaries of childhood" ;

4. (

• conceptional ,
• ideational ,
• notional

) being of the nature of a notion or concept; "a plan abstract and conceptional"; "to improve notional comprehension"; "a notional response to the question" ;