[1] : The Collaborative International Dictionary of English v.0.48

exculpate \excul"pate\, v. t. imp.  p. p. exculpated, p.
   pr.  vb. n.. exculpating ?. l. ex out + culpatus, p.
   p. of culpare to find fault with, to blame, culpa fault. see
   culpable.
   to clear from alleged fault or guilt; to prove to be
   guiltless; to relieve of blame; to acquit.
   1913 webster

         he exculpated himself from being the author of the
         heroic epistle.                          --mason.
   1913 webster

         i exculpate him further for his writing against me.
                                                  --milman.

   syn: to exonerate; absolve; clear; acquit; excuse; vindicate;
        justify.
        1913 webster
see also:
exculpated exculpating culpable 

[2] : WordNet (r) 2.0

exculpate
     v : pronounce not guilty of criminal charges; "the suspect was
         cleared of the murder charges" syn: acquit, assoil,
         clear, discharge, exonerate ant: convict
see also:
acquit assoil clear discharge exonerate convict 

[3] : Moby Thesaurus II by Grady Ward, 1.0

45 moby thesaurus words for "exculpate":
   absolve, account for, acquit, amnesty, clear, condone,
   cry sour grapes, decontaminate, destigmatize, discharge, dismiss,
   dispense from, do justice to, excuse, exempt, exempt from,
   exonerate, explain, forgive, free, give absolution,
   grant amnesty to, grant forgiveness, grant immunity,
   grant remission, justify, let go, let off, nonpros, pardon, purge,
   quash the charge, rationalize, rehabilitate, reinstate, release,
   remit, restore, set free, shrive, spare, vindicate, warrant,
   whitewash, withdraw the charge

Exculpate >> E Words
Exculpate, definition of term: Exculpate
exculpate_pag1.html