DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   committed
       adj 1: bound or obligated, as under a pledge to a particular
              cause, action, or attitude; "committed church members";
              "a committed Marxist" [ant: uncommitted]
       2: associated in an exclusive sexual relationship [syn:
          attached, committed] [ant: unattached, uncommitted]