The Collaborative International Dictionary of English v.0.48:

Assent \As*sent"\, v. t. [imp. & p. p. Assented; p. pr. & vb.
   n. Assenting.] [F. assentir, L. assentire, assentiri; ad +
   sentire to feel, think. See Sense.]
   To admit a thing as true; to express one's agreement,
   acquiescence, concurrence, or concession.
   [1913 Webster]

         Who informed the governor . . . And the Jews also
         assented, saying that these things were so. --Acts
                                                  xxiv. 9.
   [1913 Webster]

         The princess assented to all that was suggested.
                                                  --Macaulay.
   [1913 Webster]

   Syn: To yield; agree; acquiesce; concede; concur.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Assenting \As*sent"ing\, a.
   Giving or implying assent. -- As*sent"ing*ly, adv.
   [1913 Webster]

WordNet (r) 3.0 (2006):

assenting
    n 1: agreeing with or consenting to (often unwillingly);
         "accession to such demands would set a dangerous
         precedent"; "assenting to the Congressional determination"
         [syn: accession, assenting]

Moby Thesaurus II by Grady Ward, 1.0:

49 Moby Thesaurus words for "assenting":
   abject, accepting, accordant, acquiescent, acquiescing,
   affirmative, agreeable, agreed, agreeing, approving, assentatious,
   complaisant, compliable, compliant, complying, conceding,
   concessive, consentient, consenting, content, eager, endorsing,
   favorable, nondissenting, nonresistant, nonresisting, nonresistive,
   nothing loath, obedient, passive, permissive, prompt, ratifying,
   ready, resigned, sanctioning, servile, submissive, subservient,
   supine, unassertive, uncomplaining, ungrudging, unloath,
   unrefusing, unreluctant, unresistant, unresisting, willing