The Collaborative International Dictionary
Delusiveness
Delusive \De*lu"sive\, a. [See Delude.] Apt or fitted to delude; tending to mislead the mind; deceptive; beguiling; delusory; as, delusive arts; a delusive dream.
Delusive and unsubstantial ideas.
--Whewell.
-- De*lu"sive*ly, adv. -- De*lu"sive*ness, n.
Wiktionary
delusiveness
n. The state or quality of being delusive.
Usage examples of "delusiveness".
Second, from its blinding delusiveness, so that it can no more deceive as it once did.