The Collaborative International Dictionary of English v.0.48:

Affectionate \Af*fec"tion*ate\, a. [Cf. F. affectionn['e].]
   1. Having affection or warm regard; loving; fond; as, an
      affectionate brother.
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   2. Kindly inclined; zealous. [Obs.] --Johson.
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            Man, in his love God, and desire to please him, can
            never be too affectionate.            --Sprat.
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   3. Proceeding from affection; indicating love; tender; as,
      the affectionate care of a parent; affectionate
      countenance, message, language.
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   4. Strongly inclined; -- with to. [Obs.] --Bacon.
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   Syn: Tender; attached; loving; devoted; warm; fond; earnest;
        ardent.
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WordNet (r) 3.0 (2006):

affectionate
    adj 1: having or displaying warmth or affection; "affectionate
           children"; "a fond embrace"; "fond of his nephew"; "a
           tender glance"; "a warm embrace" [syn: affectionate,
           fond, lovesome, tender, warm]

Moby Thesaurus II by Grady Ward, 1.0:

50 Moby Thesaurus words for "affectionate":
   Christian, Christlike, Christly, adoring, benign, benignant,
   brotherly, caring, compassionate, conjugal, dear, decent,
   demonstrative, devoted, doting, faithful, filial, fond, fraternal,
   good, gracious, human, humane, husbandly, kind, kindhearted,
   kindly, kindly-disposed, languishing, lovelorn, lovesick, lovesome,
   loving, maternal, melting, nice, parental, paternal, romantic,
   sentimental, soft, softhearted, sympathetic, sympathizing, tender,
   tenderhearted, uxorious, warm, warmhearted, wifely