noun, noun or participle which takes 'suru', intransitive verb
A yojijukugo used for statements, arguments, or positions that contradict themselves. Often used in formal or critical contexts.
彼の主張は自家撞着に陥っている。
His argument falls into self-contradiction.
その政策は自家撞着していると批判された。
The policy was criticized for being self-contradictory.