The Collaborative International Dictionary of English v.0.48:

Dispute \Dis*pute"\, v. i. [imp. & p. p. Disputed; p. pr. &
   vb. n. Disputing.] [OE. desputen, disputen, OF. desputer,
   disputer, F. disputer, from L. disputare, disputatum; dis- +
   putare to clean; hence, fig., to clear up, set in order,
   reckon, think. See Putative, Pure.]
   To contend in argument; to argue against something
   maintained, upheld, or claimed, by another; to discuss; to
   reason; to debate; to altercate; to wrangle.
   [1913 Webster]

         Therefore disputed [reasoned, --Rev. Ver.] he in
         synagogue with the Jews.                 --Acts xvii.
                                                  17.
   [1913 Webster]

WordNet (r) 3.0 (2006):

disputed
    adj 1: subject to disagreement and debate

Moby Thesaurus II by Grady Ward, 1.0:

32 Moby Thesaurus words for "disputed":
   belied, confounded, confuted, contested, deflated, denied,
   disbelieved, discarded, discredited, dismissed, disproved, doubted,
   exploded, exposed, impugned, invalidated, mistrusted, moot,
   negated, negatived, overthrown, overturned, punctured, questioned,
   refuted, rejected, shown up, suspect, suspected, under a cloud,
   under suspicion, upset