The Collaborative International Dictionary of English v.0.48:

Endear \En*dear"\, v. t. [imp. & p. p. Endeared; p. pr. & vb.
   n. Endearing.]
   1. To make dear or beloved. "To be endeared to a king."
      --Shak.
      [1913 Webster]

   2. To raise the price or cost of; to make costly or
      expensive. [R.] --King James I. (1618).
      [1913 Webster]

WordNet (r) 3.0 (2006):

endear
    v 1: make attractive or lovable; "This behavior endeared her to
         me"

Moby Thesaurus II by Grady Ward, 1.0:

18 Moby Thesaurus words for "endear":
   allure, attract, becharm, bewitch, captivate, carry away, charm,
   draw on, enamor, enrapture, fascinate, hold in thrall, infatuate,
   inflame with love, seduce, tantalize, tempt, vamp