The Collaborative International Dictionary of English v.0.48:

Intellectualize \In`tel*lec"tu*al*ize\, v. t.
   1. To treat in an intellectual manner; to discuss
      intellectually; to reduce to intellectual form; to express
      intellectually; to idealize.
      [1913 Webster]

            Sentiment is intellectualized emotion. --Lowell.
      [1913 Webster]

   2. To endow with intellect; to bestow intellectual qualities
      upon; to cause to become intellectual.
      [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "intellectualize":
   analyze, apply reason, cerebrate, cogitate, conceive,
   conceptualize, deduce, entertain ideas, exercise the mind,
   form ideas, generalize, hypothesize, ideate, infer, logicalize,
   logicize, philosophize, provide a rationale, rationalize, reason,
   syllogize, synthesize, theorize, think, use reason