Source : Webster's Revised Unabridged Dictionary (1913)

Indeed \In*deed"\, adv. [Prep. in + deed.]
   In reality; in truth; in fact; verily; truly; -- used in a
   variety of sense. Esp.:
   (a) Denoting emphasis; as, indeed it is so.
   (b) Denoting concession or admission; as, indeed, you are
       right.
   (c) Denoting surprise; as, indeed, is it you? Its meaning is
       not intrinsic or fixed, but depends largely on the form
       of expression which it accompanies.

Source : WordNet®

indeed
     adv 1: in truth (often tends to intensify); "they said the car
            would break down and indeed it did"; "it is very cold
            indeed"; "was indeed grateful"; "indeed, the rain may
            still come"; "he did so do it!" [syn: {so}]
     2: (used as an interjection) an expression of surprise or
        skepticism or irony etc.; "Wants to marry the butler?
        Indeed!"