swear blind
成語所屬單字swear
swear blind — 慣用語
1. To strongly insist that something is true, even if others doubt it.
1.慣用語
釋義
發誓說某事千真萬確
To strongly insist that something is true, even if others doubt it.
例句
Mia swore blind that she had never seen the missing keys.
Did Tom swear blind he finished the project on time?