The Collaborative International Dictionary of English v.0.48:

Consent \Con*sent"\, v. i. [imp. & p. p. Consented; p. pr. &
   vb. n. Consenting.] [F. consentir, fr. L. consentire,
   -sensum, to feel together, agree; con- + sentire to feel. See
   Sense.]
   1. To agree in opinion or sentiment; to be of the same mind;
      to accord; to concur.
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            And Saul was consenting unto his death. --Acts.
                                                  viii. 1.
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            Flourishing many years before Wyclif, and much
            consenting with him in jugdment.      --Fuller.
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   2. To indicate or express a willingness; to yield to
      guidance, persuasion, or necessity; to give assent or
      approval; to comply.
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            My poverty, but not my will, consents. --Shak.
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            And whispering "I will ne'er consent," -- consented.
                                                  --Byron.

   Syn: To accede; yield; assent; comply; agree; allow; concede;
        permit; admit; concur; acquiesce.
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The Collaborative International Dictionary of English v.0.48:

Consent \Con*sent"\, v. t.
   To grant; to allow; to assent to; to admit. [Obs.]
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         Interpreters . . . will not consent it to be a true
         story.                                   --Milton.
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The Collaborative International Dictionary of English v.0.48:

Consent \Con*sent"\, n. [Cf. OF. consent.]
   1. Agreement in opinion or sentiment; the being of one mind;
      accord.
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            All with one consent began to make excuse. --Luke
                                                  xiv. 18.
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            They fell together all, as by consent. --Shak.
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   2. Correspondence in parts, qualities, or operations;
      agreement; harmony; coherence.
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            The melodious consent of the birds.   --Holland.
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            Such is the world's great harmony that springs
            From union, order, full consent of things. --Pope.
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   3. Voluntary accordance with, or concurrence in, what is done
      or proposed by another; acquiescence; compliance;
      approval; permission.
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            Thou wert possessed of David's throne
            By free consent of all.               --Milton.
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   4. (Law) Capable, deliberate, and voluntary assent or
      agreement to, or concurrence in, some act or purpose,
      implying physical and mental power and free action.
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   5. (Physiol.) Sympathy. See Sympathy, 4.

   Syn: Assent; acquiescence; concurrence; agreement; approval;
        permission. See Assent.
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   Age of consent (Law), an age, fixed by statute and varying
      in different jurisdictions, at which one is competent to
      give consent. Sexual intercourse with a female child under
      the age of consent is punishable as rape.
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Moby Thesaurus II by Grady Ward, 1.0:

221 Moby Thesaurus words for "consent":
   OK, abide by, accede, accede to, accept, acceptance, accession,
   acclaim, acclamation, accord, accord to, accordance, acquiesce,
   acquiesce in, acquiescence, admission, admit, agree, agree to,
   agree with, agreeability, agreeableness, agreement,
   agreement in principle, agreement of all, alacrity, allow,
   allowance, amenability, applaud, approval, approve, approve of,
   ardor, assent, assentation, authorization, authorize, be agreeable,
   be agreeable to, be dying to, be eager, be game, be open to,
   be ready, be spoiling for, be willing, buy, cede, charter, cheer,
   cheerful consent, chorus, collaborate, common assent,
   common consent, complaisance, compliance, comply, concede, concert,
   concord, concordance, concur, concurrence, condescend, conform,
   connive at, consensus, consensus gentium, consensus of opinion,
   consensus omnium, consent to, consent to silently, consentaneity,
   cooperate, cooperativeness, deference, deign, dispensation,
   dispense, docility, eagerness, endorse, enthusiasm, face the music,
   favorable disposition, favorableness, forwardness, gameness,
   general acclamation, general agreement, general consent,
   general voice, give consent, give in, give leave, give permission,
   give the go-ahead, give the nod, give the word, go along with,
   go-ahead, goodwill, grant, hail, harmony, have no objection,
   hearty assent, hold with, homage, imprimatur, in toto, incline,
   kneeling, knock under, knuckle down, knuckle under, lean, leave,
   let, liberty, license, like-mindedness, live with it,
   look kindly upon, make possible, meeting of minds,
   mutual understanding, nod, nod assent, nonopposal, nonopposition,
   nonresistance, not hesitate to, not refuse, not resist, obedience,
   obeisance, obey, okay, one accord, one voice, passiveness,
   passivity, patent, permission, permission to enter, permit,
   pliability, pliancy, plunge into, promptness, ratify, readiness,
   receive, receptive mood, receptiveness, receptivity, release,
   relent, resign, resignation, resignedness, responsiveness,
   right mood, same mind, sanction, say aye, say the word, say yes,
   seal of approval, single voice, special permission, subjection,
   submission, submit, submittal, subscribe, subscribe to, succumb,
   sufferance, supineness, support, swallow it, swallow the pill,
   take, take it, take kindly to, ticket, ticket of admission,
   total agreement, tractability, unanimity, unanimousness,
   understanding, ungrudgingness, unison, universal agreement,
   unloathness, unreluctance, vote affirmatively, vote aye, vote for,
   vouchsafe, vouchsafement, waiver, warm assent, welcome,
   willing ear, willing heart, willingness, wink at, would as leave,
   would as lief, yes, yield, yield assent, yielding, zeal,
   zealousness