The Collaborative International Dictionary of English v.0.48:

Deliberate \De*lib"er*ate\ (d[-e]*l[i^]b"[~e]r*[asl]t), a. [L.
   deliberatus, p. p. of deliberare to deliberate; de- + librare
   to weigh. See Librate.]
   1. Weighing facts and arguments with a view to a choice or
      decision; carefully considering the probable consequences
      of a step; circumspect; slow in determining; -- applied to
      persons; as, a deliberate judge or counselor. "These
      deliberate fools." --Shak.
      [1913 Webster]

   2. Formed with deliberation; well-advised; carefully
      considered; not sudden or rash; as, a deliberate opinion;
      a deliberate measure or result.
      [1913 Webster]

            Settled visage and deliberate word.   --Shak.
      [1913 Webster]

   3. Not hasty or sudden; slow. --Hooker.
      [1913 Webster]

            His enunciation was so deliberate.    --W. Wirt.

   4. having awareness of the likely consequences; intentional.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Deliberate \De*lib"er*ate\ (d[-e]*l[i^]b"[~e]r*[=a]t), v. t.
   [imp. & p. p. Deliberated; p. pr. & vb. n. Deliberating.]
   To weigh in the mind; to consider the reasons for and
   against; to consider maturely; to reflect upon; to ponder;
   as, to deliberate a question.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Deliberate \De*lib"er*ate\, v. i.
   To take counsel with one's self; to weigh the arguments for
   and against a proposed course of action; to reflect; to
   consider; to hesitate in deciding; -- sometimes with on,
   upon, about, concerning.
   [1913 Webster]

         The woman that deliberates is lost.      --Addison.
   [1913 Webster]

WordNet (r) 3.0 (2006):

deliberate
    adj 1: carefully thought out in advance; "a calculated insult";
           "with measured irony" [syn: deliberate, calculated,
           measured]
    2: unhurried and with care and dignity; "walking at the same
       measured pace"; "with all deliberate speed" [syn: careful,
       deliberate, measured]
    v 1: think about carefully; weigh; "They considered the
         possibility of a strike"; "Turn the proposal over in your
         mind" [syn: consider, debate, moot, turn over,
         deliberate]
    2: discuss the pros and cons of an issue [syn: debate,
       deliberate]