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unauthenticated

/ˌʌnɔːˈθɛntɪˌkeɪtɪd/ · un·au·then·ti·ated
adjective
  1. Having no authentication; not verified as genuine or authorized. The server rejected the unauthenticated request and returned a 401 error.
Did you know? The word gained prominence with the rise of web security standards, appearing in the HTTP/1.1 specification to describe requests lacking proper credentials.
Written by Lexi Wordsworth, Dictionary Editor 0 lookups Added Aug 23, 2026