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.
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         A duty well beseeming the preachers.     --Clarendon.
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         What form of speech or behavior beseemeth us, in our
         prayers to God ?                         --Hocker.
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