The Collaborative International Dictionary of English v.0.48:

Misprize \Mis*prize"\ (m[i^]s*pr[imac]z"), v. t. [OF. mesprisier
   to deprise, F. m['e]priser; pref. amiss, wrong (L. minus less
   + LL. pretium price. See price, Prize, v.]
   To slight or undervalue.
   [1913 Webster]

         O, for those vanished hours, so much misprized!
                                                  --Hillhouse.
   [1913 Webster]

         I do not blame them, madam, nor misprize. --Mrs.
                                                  Browning.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

44 Moby Thesaurus words for "misprize":
   be above, be contemptuous of, belittle, care nothing for, contemn,
   deprecate, depreciate, deride, despise, disdain, disparage,
   disprize, dump on, feel contempt for, feel superior to,
   hold beneath one, hold cheap, hold in contempt, insult,
   look down upon, make light of, make little of, make nothing of,
   minimize, misestimate, put down, rank low, ridicule, scorn,
   sell short, set at naught, set little by, shrug off, sneer at,
   sneeze at, sniff at, snort at, think little of, think nothing of,
   underestimate, underprize, underrate, underreckon, undervalue