Source : Webster's Revised Unabridged Dictionary (1913)

Tidy \Ti"dy\, v. t. [imp. & p. p. {Tidied}; p. pr. & vb. n.
   {Tidying}.]
   To put in proper order; to make neat; as, to tidy a room; to
   tidy one's dress.

Source : WordNet®

tidy
     adj 1: marked by good order and cleanliness in appearance or
            habits; "a tidy person"; "a tidy house"; "a tidy mind"
            [ant: {untidy}]
     2: (used of hair) neat and tidy; "a nicely kempt beard" [syn: {kempt},
         {trim}]
     3: large in amount or extent or degree; "it cost a considerable
        amount"; "a goodly amount"; "received a hefty bonus"; "a
        respectable sum"; "a tidy sum of money"; "a sizable
        fortune" [syn: {goodly}, {goodish}, {hefty}, {respectable},
         {sizable}, {sizeable}]
     n : receptacle that holds odds and ends (as sewing materials)
     [also: {tidied}, {tidiest}, {tidier}]

tidy
     v : put (things or places) in order; "Tidy up your room!" [syn:
         {tidy up}, {clean up}, {neaten}, {straighten}, {straighten
         out}, {square away}]
     [also: {tidied}, {tidiest}, {tidier}]

tidied
     See {tidy}