purposive

from WordNet (r) 3.0 (2006)

purposive
    adj 1: having or showing or acting with a purpose or design;
           "purposive behavior"
    2: having a purpose; "purposive behavior" [syn: {goal-directed},
       {purposive}]

from The Collaborative International Dictionary of English v.0.48

Purposive \Pur"po*sive\, a.
   Having or indicating purpose or design. "Purposive
   characters." --Bastian.
   [1913 Webster]

         Purposive modification of structure in a bone. --Owen.
   [1913 Webster]

         It is impossible that the frog should perform actions
         morepurposive than these.                --Huxley.
   [1913 Webster]