illusory

adjective

il·​lu·​so·​ry i-ˈlü-sə-rē How to pronounce illusory (audio) -ˈlü-zə- How to pronounce illusory (audio)
-ˈlüs-,
-ˈlüz-
: based on or producing illusion : deceptive
illusory hopes
illusorily
i-ˈlü-sə-rə-lē How to pronounce illusory (audio)
-ˈlü-zə-;
-ˈlüs-
-ˈlüz-
adverb
illusoriness
i-ˈlü-sə-rē-nəs How to pronounce illusory (audio)
-ˈlü-zə-;
-ˈlüs-
-ˈlüz-
noun
Choose the Right Synonym for illusory

apparent, illusory, seeming, ostensible mean not actually being what appearance indicates.

apparent suggests appearance to unaided senses that may or may not be borne out by more rigorous examination or greater knowledge.

the apparent cause of the accident

illusory implies a false impression based on deceptive resemblance or faulty observation, or influenced by emotions that prevent a clear view.

an illusory sense of security

seeming implies a character in the thing observed that gives it the appearance, sometimes through intent, of something else.

the seeming simplicity of the story

ostensible suggests a discrepancy between an openly declared or naturally implied aim or reason and the true one.

the ostensible reason for their visit

Examples of illusory in a Sentence

an illusory sense of security
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
For years, the only mechanisms available for relief from a federal firearms disability were the all but impossible pardon, seemingly illusory expungement that did not satisfy federal requirements, or an expensive and uncertain route of litigation. Mandy Taheri hannah Parry, MSNBC Newsweek, 18 July 2025 The Aries moon inspires you while also casting an illusory haze. Usa Today, USA Today, 19 June 2025 The debacle of the Iraq War, triggered by the pursuit of Saddam Hussein’s illusory weapons of mass destruction and links to al-Qaeda, infuriated young conservatives such as JD Vance (who served for six months in Iraq in 2005 as a military journalist). Adrian Wooldridge, Twin Cities, 18 June 2025 Rethinking Digital Justice The Utah warrant study reveals a justice system where constitutional protections may be more illusory than real, despite technological advances that have made the warrant process more efficient than ever before. Lars Daniel, Forbes.com, 11 June 2025 See All Example Sentences for illusory

Word History

First Known Use

circa 1631, in the meaning defined above

Time Traveler
The first known use of illusory was circa 1631

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Cite this Entry

“Illusory.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/illusory. Accessed 22 Jul. 2025.

Kids Definition

illusory

adjective
il·​lu·​so·​ry il-ˈüs-(ə-)rē How to pronounce illusory (audio)
-ˈüz-
: based on or producing illusion : deceptive
an illusory hope

Medical Definition

illusory

adjective
il·​lu·​so·​ry il-ˈüs-(ə-)rē How to pronounce illusory (audio) -ˈüz- How to pronounce illusory (audio)
: based on or producing illusion : being deceptive
the search for the ultimate cure-all for a hangover has proved illusoryM. L. Herndon

Legal Definition

illusory

adjective
il·​lu·​so·​ry i-ˈlü-sə-rē, -zə-rē How to pronounce illusory (audio)
: likely to mislead or deceive : false, deceptive
an illusory plea bargain leading to a longer sentence than expected

More from Merriam-Webster on illusory

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