The Collaborative International Dictionary of English v.0.48:

Instill \In*still"\, v. t. [imp. & p. p. Instilled; p. pr. &
   vb. n. Instilling.] [L. instillare, instillatum; pref. in-
   in + stillare to drop, fr. stilla a drop: cf. F. instiller.
   See Distill.] [Written also instil.]
   1. To drop in; to pour in drop by drop.
      [1913 Webster]

            That starlight dews
            All silently their tears of love instill. --Byron.
      [1913 Webster]

   2. Specifically: To infuse (knowledge or attitudes) into the
      mind of another, slowly or gradually; to impart gradually;
      to cause to be imbibed.
      [PJC]

            How hast thou instilled
            Thy malice into thousands.            --Milton.

   Syn: To infuse; impart; inspire; implant; inculcate;
        insinuate.
        [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "instilled":
   chronic, confirmed, deep-dyed, deep-fixed, deep-rooted,
   deep-seated, deep-set, deep-settled, dyed-in-the-wool, established,
   fast, fixed, implanted, incorrigible, inculcated, infixed,
   ingrained, inveterate, irreversible, long-established, rooted, set,
   settled, settled in habit, thorough