UNKNOWN

adj. 1 unrecognized, unfamiliar, strange, unnamed, anonymous, nameless, unidentified; obscure, unheard-of, little-known, humble, undistinguished, unsung Some unknown person left this package for you Bill is in some unknown place for the weekend. An unknown poet won the competition. 2 unfamiliar, unexplored, uninvestigated, unresearched, unrevealed, mysterious, uncharted, unidentified, dark We were now going into unknown territory 3 unbeknownst, untold, unrevealed Unknown to me, the thieves were at that moment breaking in through the kitchen window