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Synonyms

impostor

American  
[im-pos-ter] / ɪmˈpɒs tər /
Or imposter

noun

  • impostors
    plural
  1. a person who practices deception under an assumed character, identity, or name.


impostor British  
/ ɪmˈpɒstə /

noun

  1. a person who deceives others, esp by assuming a false identity; charlatan

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of impostor

1580–90; < Late Latin, equivalent to Latin impos ( i )-, variant stem of impōnere to deceive, place on ( see impone) + -tor -tor

Vocabulary lists containing impostor

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

But after 54 hours of work and several timely pep talks, Claude overcame its skepticism—and its case of impostor syndrome— and surprised itself with the result.

From The Wall Street Journal Aug. 15, 2026

He had paid the impostor at least $700 since February, he told her.

From Los Angeles Times Jul. 31, 2026

In Orange County, Rivera reported her impostor to the state bar, which is investigating.

From Los Angeles Times Jul. 31, 2026

He said the "lone impostor" explanation did not add up.

From BBC Jul. 11, 2026

His face was as mild and hopeless as ever; mooning above the snappy, rigid blouse, it gave him the air of an impostor.

From "A Separate Peace" by John Knowles

The state bar is able to pursue disciplinary action only against California-licensed attorneys, but has no authority against impostors.

From Los Angeles Times Jul. 31, 2026

“Additionally, many AI impostors will be revealed this year as well; the 2026 equivalents to Pets.com will not make it through to 2027.”

From Barron's Jan. 13, 2026

Right now, dating apps are falling out of favor with those treasured demographics, not least thanks to the prevalence of catfishing impostors and nonstop deluges of fake dating options.

From Slate May 17, 2024

The search for the ghost of his particle has been similarly confounded by impostors.

From Science Magazine Dec. 20, 2023

“It washes away all enchantment, all magical concealment! They know there are impostors in Gringotts, they have set off defenses against us!”

From "Harry Potter and the Deathly Hallows" by J.K. Rowling

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