The Collaborative International Dictionary of English v.0.48:

Exemplify \Ex*em"pli*fy\v. t. [imp. & p. p. Exemplified; p.
   pr. & vb. n. Exemplifying.] [L. exemplum example + -fy: cf.
   LL. exemplificare to copy, serve as an example.]
   1. To show or illustrate by example.
      [1913 Webster]

            He did but . . . exemplify the principles in which
            he had been brought up.               --Cowper.
      [1913 Webster]

   2. To copy; to transcribe; to make an attested copy or
      transcript of, under seal, as of a record. --Holland.
      [1913 Webster]

   3. To prove or show by an attested copy.
      [1913 Webster]

WordNet (r) 3.0 (2006):

exemplify
    v 1: be characteristic of; "This compositional style is
         exemplified by this fugue" [syn: exemplify, represent]
    2: clarify by giving an example of [syn: exemplify,
       illustrate, instance]

Moby Thesaurus II by Grady Ward, 1.0:

87 Moby Thesaurus words for "exemplify":
   absolve, account for, adumbrate, allegorize, body forth,
   call to mind, cite, cite a particular, clarify, clear up, crack,
   decipher, demonstrate, demythologize, depict, discharge, dispense,
   display, document, elucidate, emblematize, embody, enlighten,
   epitomize, euhemerize, example, except, excuse, exempt, exhibit,
   explain, explain away, explicate, exposit, expound, figure,
   fit the pattern, foreshadow, free, give a for-instance,
   give reason for, give the meaning, illuminate, illustrate, image,
   impersonate, incarnate, instance, itemize, lead the way, let off,
   make clear, make plain, mirror, model, name, particularize,
   personate, personify, popularize, prefigure, pretypify, project,
   quote, rationalize, realize, reflect, relieve, represent,
   set an example, set the pace, shadow, shadow forth,
   shed light upon, show, show how, show the way, simplify, solve,
   spare, spell out, symbolize, throw light upon, typify, unfold,
   unlock, unravel