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Synonyms

impostor

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

noun

  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

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.

Impostor syndrome means you’re still holding onto the person you were before.

From Los Angeles Times • Dec. 16, 2025

The band address the phenomenon on their recent song Impostor, which reflects on the anxiety of building on that momentum, and the understandable onset of impostor syndrome.

From BBC • Jun. 23, 2025

How can I convince Captain Impostor that they are no longer welcome as my sidekick in life?

From Washington Post • Aug. 22, 2022

Impostor syndrome is something that doesn’t sit with you all the time.

From Slate • May 2, 2021

That fearful Impostor, Pumblechook, immediately nodded, and said, as he rubbed the arms of his chair, “It’s more than that, Mum.”

From "Great Expectations" by Charles Dickens