swear on (one's) mother's grave
swear on (one's) mother's grave
To make a very serious, solemn pledge, especially that one is telling the truth. Janet has sworn on her mother's grave that she wasn't the one to betray me, and I believe her. I swear on my mother's grave that if I have a chance to help your campaign, I will.
See also: grave, on, swear
Farlex Dictionary of Idioms.
- 1FTR
- drive (one) out of office
- force (one) out of office
- force out of office
- give (one) (one's) head
- give head
- give somebody their head
- give someone their head
- cooking for one
- as one door closes, another opens