not have a leg to stand on
成語所屬單字leg
not have a leg to stand on — 慣用語
1. to have no support for your opinion or position, especially when trying to prove
1.慣用語
釋義
站不住腳；缺乏依據
to have no support for your opinion or position, especially when trying to prove something or defend yourself in an argument.
例句
Without any evidence, the lawyer did not have a leg to stand on in court.