Source : Webster's Revised Unabridged Dictionary (1913)

Admirer \Ad*mir"er\, n.
   One who admires; one who esteems or loves greatly. --Cowper.

Source : WordNet®

admirer
     n 1: a person who backs a politician or a team etc.; "all their
          supporters came out for the game"; "they are friends of
          the library" [syn: {supporter}, {protagonist}, {champion},
           {booster}, {friend}]
     2: a person who admires; someone who esteems or respects or
        approves
     3: someone who admires a young woman; "she had many admirers"
        [syn: {adorer}]