adjective un·sus·pect·ed \ˌən-sə-ˈspek-tə-bəl\

Definition of unsuspected

  1. :  not imagined to exist or be true, likely, or possible :  not suspected an unsuspected illness … suggests that the universe contains a hitherto unsuspected form of invisible matter. — I. Peterson

Circa 1530

First Known Use of unsuspected

circa 1530

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