Source : Webster's Revised Unabridged Dictionary (1913)

Reason \Rea"son\, v. t. [imp. & p. p. {Reasoned}; p. pr. & vb.
   n. {Reasoning}.] [Cf. F. raisonner. See {Reason}, n.]
   1. To exercise the rational faculty; to deduce inferences
      from premises; to perform the process of deduction or of
      induction; to ratiocinate; to reach conclusions by a
      systematic comparison of facts.

   2. Hence: To carry on a process of deduction or of induction,
      in order to convince or to confute; to formulate and set
      forth propositions and the inferences from them; to argue.

            Stand still, that I may reason with you, before the
            Lord, of all the righteous acts of the Lord. --1
                                                  Sam. xii. 7.

   3. To converse; to compare opinions. --Shak.

Source : WordNet®

reasoned
     adj 1: reflects weight of sound argument or evidence; "a sound
            argument" [syn: {sound}, {well-grounded}]
     2: resulting from careful thought; "the paper was well thought
        out" [syn: {considered}, {well thought out(p)}]