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illusionary

or il·lu·sion·al

[ih-loo-zhuh-ner-ee or ih-loo-zhuh-nl]
adjective
  1. of, relating to, or characterized by illusions; deceptive; misleading.
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Origin of illusionary

First recorded in 1885–90; illusion + -ary
Related formsnon·il·lu·sion·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for illusional

illusionary

adj.

1886, from illusion + -ary.

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Online Etymology Dictionary, © 2010 Douglas Harper