Imposter vs. Impostor — What's the Difference?

"Imposter" and "impostor" both describe an individual who assumes a false identity or role to deceive others. The terms are interchangeable, with no distinction in their definitions or contexts of use. The variation in spelling is primarily attributed to differences in American and British English preferences, although both spellings can be found in each variant of English. Historically, "impostor" has been the more commonly accepted spelling, but "imposter" has gained usage over time and is equally valid in contemporary usage.

The choice between "imposter" and "impostor" often comes down to personal preference, editorial standards, or the influence of regional spelling conventions. In literature, journalism, and academic writing, the preference for one spelling over the other may align with the publication's style guide or the author's familiarity with one form. Despite the spelling difference, the pronunciation remains the same, and there is no difference in connotation or implied meaning.

The concept of "impostor syndrome" (also spelled "imposter syndrome") refers to an internal experience of believing that one is not as competent as others perceive them to be, despite evidence of success. This phenomenon highlights the word's use beyond its original meaning, extending into discussions of self-perception and mental health. Regardless of spelling, the term carries the same significance in this context.

Given their interchangeability, the choice between "imposter" and "impostor" should be guided by consistency within a document or according to the preferred style guide of the publication or institution. Understanding that both spellings are correct and accepted helps avoid confusion or concern over correctness when encountering or using the term.