ichidan verb, intransitive verb
get complicated; go wrong; turn sour
Describes a situation, relationship, or plan that becomes tangled, worsens, or goes awry, often beyond easy repair. Intransitive; the subject is the thing that goes wrong.
話し合いがこじれて、結局何も決まらなかった。
The discussion got complicated and in the end nothing was decided.
Their relationship turned sour.
計画がこじれて、中止になった。
The plan went wrong and was canceled.