Imposter-Impostor | Commonly Confused Words

Imposter

/ɪmˈpɒsʧər/

A person who pretends to be someone else to deceive others

/ɪmˈpɒstə/

A person who pretends to be someone else, often to deceive or commit fraud

The impostor's real identity remained a mystery.She fooled everyone with her impostor's disguise.An impostor infiltrated the organization undetected.

This word has no antonyms

Impostor is more commonly used in American English, while imposter is seen more often in British English.
Both words have the same meaning and can be used interchangeably.
Remember that if youre writing for an American audience, impostor' might be a more familiar spelling.
For a British audience, imposter might resonate better.
Think of impostor with an o as being upfront and official, like many American spellings.