ミシミシ

adverb, adverb taking the 'to' particle, noun or participle which takes 'suru'

with a creak; creakily

Mimetic word describing a heavy creaking or groaning sound, often from wood, floors, or strained objects.

• 古ふるい床ゆかがミシミシと音おとを立たてた。

  The old floor creaked loudly.

• 重おもい荷に物もつを載のせたら棚たながミシミシいった。

  When I put a heavy load on it, the shelf groaned.