Source : Webster's Revised Unabridged Dictionary (1913)

Higgledy-piggledy \Hig`gle*dy-pig"gle*dy\, adv.
   In confusion; topsy-turvy. [Colloq.] --Johnson.

Source : WordNet®

higgledy-piggledy
     adj : in utter disorder; "a disorderly pile of clothes" [syn: {disorderly},
            {hugger-mugger}, {jumbled}, {topsy-turvy}]
     adv : in a disordered manner; "they were piled up
           higgledy-piggledy" [syn: {topsy-turvy}]