Source : Webster's Revised Unabridged Dictionary (1913)

Cogitative \Cog"i*ta*tive\, a. [Cf. LL. cogitativus.]
   1. Possessing, or pertaining to, the power of thinking or
      meditating. ``Cogitative faculties.'' --Wollaston.

   2. Given to thought or contemplation. --Sir H. Wotton.

Source : WordNet®

cogitative
     adj 1: of or relating to having capacities for cogitation; "the
            cogitative faculty"
     2: given to cogitation; "he looked at me with cogitative eyes"