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noun Uncommon

delusion

dih-LOOZHN
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Delusion (noun) means a firmly held false belief, maintained even against clear evidence. Example: “His delusion that he was being watched grew worse over the years.”

noun
1
A firmly held false belief, maintained even against clear evidence.
"His delusion that he was being watched grew worse over the years."
"The therapist worked to gently challenge her delusions."

How to use delusion

Learner’s notes

In plain EnglishA false belief someone holds onto tightly, even when the facts say otherwise.

Common mistake

In clinical use, a delusion is a specific symptom of certain mental health conditions, not just any mistaken idea.

Easily confused with
Common pairings
delusions of grandeur suffer from delusions under the delusion that
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Word forms

Plural
delusions
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Fill the gap

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His _____ that he was being watched grew worse over the years.

Etymology

From Latin delusio, from deludere ("to deceive").

Origin: Latin

illusion hallucination head game psychotic belief

Antonyms

Related words

Rhymes for delusion

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Frequently asked questions

What does “delusion” mean?
The word “delusion” means a firmly held false belief, maintained even against clear evidence. In plain terms, a false belief someone holds onto tightly, even when the facts say otherwise.
How do you pronounce “delusion”?
“Delusion” is pronounced dih-LOOZHN (/dɪˈl(j)uːʒ(ə)n/ in IPA).
How do you use “delusion” in a sentence?
Here is “delusion” used in a sentence: “His delusion that he was being watched grew worse over the years.”
What part of speech is “delusion”?
“Delusion” is a noun.
Where does the word “delusion” come from?
The word “delusion” comes from Latin. From Latin delusio, from deludere ("to deceive").
Is “delusion” a common word?
“Delusion” is an uncommon word in modern English.

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