The Collaborative International Dictionary of English v.0.48:

Exhort \Ex*hort"\, v. i.
   To deliver exhortation; to use words or arguments to incite
   to good deeds.
   [1913 Webster]

         With many other words did he testify and exhort. --Acts
                                                  ii. 40.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Exhort \Ex*hort"\, n.
   Exhortation. [Obs.] --Pope.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Exhort \Ex*hort"\, v. t. [imp. & p. p. Exhorted; p. pr. & vb.
   n. Exhorting.] [L. exhortari; ex out + hortari to incite,
   encourage; cf. F. exhorter. See Hortative.]
   To incite by words or advice; to animate or urge by
   arguments, as to a good deed or laudable conduct; to address
   exhortation to; to urge strongly; hence, to advise, warn, or
   caution.
   [1913 Webster]

         Examples gross as earth exhort me.       --Shak.
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         Let me exhort you to take care of yourself. --J. D.
                                                  Forbes.
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WordNet (r) 3.0 (2006):

exhort
    v 1: spur on or encourage especially by cheers and shouts; "The
         crowd cheered the demonstrating strikers" [syn: cheer,
         root on, inspire, urge, barrack, urge on,
         exhort, pep up]
    2: force or impel in an indicated direction; "I urged him to
       finish his studies" [syn: urge, urge on, press,
       exhort]

Moby Thesaurus II by Grady Ward, 1.0:

47 Moby Thesaurus words for "exhort":
   admonish, advocate, blandish, cajole, call on, call upon, caution,
   charge, coax, egg on, encourage, enjoin, expostulate, goad,
   high-pressure, importune, incite, induce, insist, insist upon,
   issue a caveat, jawbone, lobby, move, nag, persuade, plead,
   plead with, preach, press, pressure, prick, prod, prompt, propel,
   push, recommend, remonstrate, sic, soft-soap, spur, stimulate,
   sweet-talk, urge, warn, wheedle, work on



The Devil's Dictionary (1881-1906):

EXHORT, v.t. In religious affairs, to put the conscience of another
upon the spit and roast it to a nut-brown discomfort.