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trouble; quarrel; dispute
隣人との間に悶着が絶えない日々だった。
Those were days of endless quarrels with the neighbors.
些細なことで悶着を起こすのはやめてくれ。
Please stop starting quarrels over trivial matters.
契約を巡る悶着が長期化している。
The dispute over the contract has become prolonged.