- Abstract - Conjectural - Hypothetical - In theory only - Notional - Pertaining to theory; depending on, or confined to,
theory or speculation; speculative; terminating in theory or
speculation: not practical; as, theoretical learning; theoretic
sciences.
- Hallucinatory - Hypothetical - Type of friend who is always in your thoughts - Unreal - Existing only in imagination or fancy; not real;
fancied; visionary; ideal. - An imaginary expression or quantity.
- Fraudulently substituted for something else; not
being what is purports to be; not genuine; spurious; counterfeit; as, a
supposititious child; a supposititious writing. - Suppositional; hypothetical.