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impostor

or im·post·er

[ im-pos-ter ]
/ ɪmˈpɒs tər /
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noun
a person who practices deception under an assumed character, identity, or name.
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Origin of impostor

1580–90; <Late Latin, equivalent to Latin impos(i)-, variant stem of impōnere to deceive, place on (see impone) + -tor-tor
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use impostor in a sentence

British Dictionary definitions for impostor

impostor

imposter

/ (ɪmˈpɒstə) /

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

Word Origin for impostor

C16: from Late Latin: deceiver; see impose
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
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