Trompeur.
ETYM Cf. French illusore.
Deceiving, or tending of deceive; fallacious; illusive.
ETYM Latin imaginarius: cf. French imaginaire.
Existing only in imagination or fancy; not real; fancied.
1. Lacking in reality or substance or genuineness; not corresponding to acknowledged facts or criteria
2. Not actually such; being or seeming fanciful or imaginary