The Collaborative International Dictionary of English v.0.48:

Inculcate \In*cul"cate\, v. t. [imp. & p. p. Inculcated; p.
   pr. & vb. n. Inculcating.] [L. inculcatus, p. p. of
   inculcare to tread on; pref. in- in, on + calcare to tread,
   fr. calx the heel; perh. akin to E. heel. Cf. 2d Calk,
   Heel.]
   To teach and impress by frequent repetitions or admonitions;
   to urge on the mind; as, Christ inculcates on his followers
   humility.
   [1913 Webster]

         The most obvious and necessary duties of life they have
         not yet had authority enough to enforce and inculcate
         upon men's minds.                        --S. Clarke.

   Syn: To instill; infuse; implant; engraft; impress.
        [1913 Webster]

WordNet (r) 3.0 (2006):

inculcate
    v 1: teach and impress by frequent repetitions or admonitions;
         "inculcate values into the young generation" [syn:
         inculcate, instill, infuse]

Moby Thesaurus II by Grady Ward, 1.0:

20 Moby Thesaurus words for "inculcate":
   beat into, brainwash, catechize, condition, engrave, etch, grave,
   imbue, implant, impregnate, impress, imprint, indoctrinate, infix,
   infuse, inoculate, inscribe, instill, program, stamp