Source : Webster's Revised Unabridged Dictionary (1913)

Aspirer \As*pir"er\, n.
   One who aspires.

Source : WordNet®

aspirer
     n : an ambitious and aspiring young person; "a lofty aspirant";
         "two executive hopefuls joined the firm"; "the audience
         was full of Madonna wannabes" [syn: {aspirant}, {hopeful},
          {wannabe}, {wannabee}]