The Collaborative International Dictionary of English v.0.48:

Agreeable \A*gree"a*ble\, a. [F. agr['e]able.]
   1. Pleasing, either to the mind or senses; pleasant;
      grateful; as, agreeable manners or remarks; an agreeable
      person; fruit agreeable to the taste.
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            A train of agreeable reveries.        --Goldsmith.
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   2. Willing; ready to agree or consent. [Colloq.]
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            These Frenchmen give unto the said captain of Calais
            a great sum of money, so that he will be but content
            and agreeable that they may enter into the said
            town.                                 --Latimer.
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   3. Agreeing or suitable; conformable; correspondent;
      concordant; adapted; -- followed by to, rarely by with.
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            That which is agreeable to the nature of one thing,
            is many times contrary to the nature of another.
                                                  --L'Estrange.
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   4. In pursuance, conformity, or accordance; -- in this sense
      used adverbially for agreeably; as, agreeable to the order
      of the day, the House took up the report.
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   Syn: Pleasing; pleasant; welcome; charming; acceptable;
        amiable. See Pleasant.
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WordNet (r) 3.0 (2006):

agreeable
    adj 1: conforming to your own liking or feelings or nature; "Is
           the plan agreeable to you?"; "he's an agreeable fellow";
           "My idea of an agreeable person...is a person who agrees
           with me"- Disraeli; "an agreeable manner" [ant:
           disagreeable]
    2: in keeping; "salaries agreeable with current trends"; "plans
       conformable with your wishes"; "expressed views concordant
       with his background" [syn: accordant, agreeable,
       conformable, consonant, concordant]
    3: prepared to agree or consent; "agreeable to the plan"