adverb, adverb taking the 'to' particle, noun or participle which takes 'suru'
crammed together; jumbled up
Describes many small things packed tightly or mixed up in a disorderly way. Often used with する or と.
引き出しの中に小物がこちゃこちゃに入っている。
Small items are crammed together in the drawer.
机の上に書類がこちゃこちゃと積まれている。
Papers are piled up jumbled together on the desk.