Source : Webster's Revised Unabridged Dictionary (1913)

Topsy-turvy \Top"sy-tur"vy\, adv. [Earlier topside-turvey,
   topsy-tervy; probably for top so turvy; that is, the top as
   turvy, as it were turvy; where turvy probably means,
   overturned, fr. {AS}. torfian to throw.]
   In an inverted posture; with the top or head downward; upside
   down; as, to turn a carriage topsy-turvy.

Source : WordNet®

topsy-turvy
     adv 1: in a disordered manner; "they were piled up
            higgledy-piggledy" [syn: {higgledy-piggledy}]
     2: in disorderly haste; "we ran head over heels toward the
        shelter" [syn: {head over heels}, {heels over head}, {topsy-turvily},
         {in great confusion}]

topsy-turvy
     adj : in utter disorder; "a disorderly pile of clothes" [syn: {disorderly},
            {higgledy-piggledy}, {hugger-mugger}, {jumbled}]