unacquainted

from WordNet (r) 3.0 (2006)

unacquainted
    adj 1: not knowledgeable about something specified; "American
           tourists wholly innocent of French"; "a person
           unacquainted with our customs" [syn: {innocent(p)},
           {unacquainted(p)}]
    2: having little or no knowledge of; "unacquainted with city
       ways" [syn: {unacquainted(p)}, {unacquainted with(p)},
       {unfamiliar with(p)}]

from The Collaborative International Dictionary of English v.0.48

Unacquainted \Un`ac*quaint"ed\, a.
   1. Not acquainted. --Cowper.
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   2. Not usual; unfamiliar; strange. [Obs.]
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            And the unacquainted light began to fear. --Spenser.
      [1913 Webster]