The Collaborative International Dictionary of English v.0.48:

Admirable \Ad"mi*ra*ble\, a. [L. admirabilis: cf. F. admirable.]
   1. Fitted to excite wonder; wonderful; marvelous. [Obs.]
      [1913 Webster]

            In man there is nothing admirable but his ignorance
            and weakness.                         --Jer. Taylor.
      [1913 Webster]

   2. Having qualities to excite wonder united with approbation;
      deserving the highest praise; most excellent; -- used of
      persons or things. "An admirable machine." "Admirable
      fortitude." --Macaulay.
      [1913 Webster]

   Syn: Wonderful; marvelous; surprising; excellent; delightful;
        praiseworthy.
        [1913 Webster]

WordNet (r) 3.0 (2006):

admirable
    adj 1: deserving of the highest esteem or admiration; "an
           estimable young professor"; "trains ran with admirable
           precision"; "his taste was impeccable, his health
           admirable"
    2: inspiring admiration or approval; "among her many admirable
       qualities are generosity and graciousness"

Moby Thesaurus II by Grady Ward, 1.0:

39 Moby Thesaurus words for "admirable":
   adorable, angelic, awe-inspiring, beyond all praise, caressable,
   charming, commendable, creditable, cuddlesome, deserving,
   estimable, excellent, exemplary, fine, first-class, first-rate,
   great, kissable, laudable, likable, lovable, lovely, lovesome,
   magic, meritorious, model, praiseworthy, seraphic, smashing,
   splendid, superior, sweet, top-drawer, unexceptionable,
   well-deserving, winning, winsome, wonderful, worthy