The Collaborative International Dictionary of English v.0.48:

Advisedly \Ad*vis"ed*ly\, adv.
   1. Circumspectly; deliberately; leisurely. [Obs.] --Shak.
      [1913 Webster]

   2. With deliberate purpose; purposely; by design. "Advisedly
      undertaken." --Suckling.
      [1913 Webster]

WordNet (r) 3.0 (2006):

advisedly
    adv 1: with intention; in an intentional manner; "he used that
           word intentionally"; "I did this by choice" [syn:
           intentionally, deliberately, designedly, on
           purpose, purposely, advisedly, by choice, by
           design] [ant: accidentally, by chance,
           circumstantially, unexpectedly, unintentionally]