ガタガタになる

expression, godan verb (-ru)

break down; collapse; fall apart

Describes something becoming physically loose, rickety, or falling apart, often with a sense of shakiness or instability. Can also refer to plans or systems breaking down.

• 古ふるい机つくえがガタガタになってしまった。

  The old desk has become rickety.

• 計けい画かくがガタガタになった。

  The plan fell apart.