The Collaborative International Dictionary of English v.0.48:

Beseem \Be*seem"\, v. t. [imp. & p. p. Beseemed; p. pr. & vb.
   n. Beseeming.] [Pref. be- + seem.]
   Literally: To appear or seem (well, ill, best, etc.) for
   (one) to do or to have. Hence: To be fit, suitable, or proper
   for, or worthy of; to become; to befit.
   [1913 Webster]

         A duty well beseeming the preachers.     --Clarendon.
   [1913 Webster]

         What form of speech or behavior beseemeth us, in our
         prayers to God ?                         --Hocker.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Beseem \Be*seem"\, v. i.
   To seem; to appear; to be fitting. [Obs.] "As beseemed best."
   --Spenser.
   [1913 Webster]

WordNet (r) 3.0 (2006):

beseem
    v 1: accord or comport with; "This kind of behavior does not
         suit a young woman!" [syn: befit, suit, beseem]