hig ‧ gle ‧ dy-pig ‧ gle ‧ dy /ˌhɪɡ ə ldi ˈpɪɡ ə ldi/ BrE AmE adjective
[ Date: 1500-1600 ; Origin: Perhaps from pig ; because pigs gather closely together in groups ]
things that are higgledy-piggledy are mixed together in an untidy way SYN untidy
—higgledy-piggledy adverb