n.: pledge one's faith to, by [upon] my troth, swear, smack calf's skin, pledge, on one's oath, take the oath, under oath (=(up)on my oath), upon oath (=(up)on my oath), on oath (=(up)on my oath), plight one's faith to, give one's faith to, engage one's faith to, take one's dick, take one's davy, dick, adjuration