Source : Webster's Revised Unabridged Dictionary (1913)

Belittle \Be*lit"tle\, v. t. [imp. & p. p. {Belittled}; p. pr. &
   vb. n. {Belittling}.]
   To make little or less in a moral sense; to speak of in a
   depreciatory or contemptuous way. --T. Jefferson.

Source : WordNet®

belittling
     adj : tending to diminish or disparage; "belittling comments";
           "managed a deprecating smile at the compliment";
           "deprecatory remarks about the book"; "a slighting
           remark" [syn: {deprecating}, {deprecative}, {deprecatory},
            {depreciative}, {depreciatory}, {slighting}]
     n 1: a belittling comment [syn: {denigration}]
     2: the act of belittling