Affidare
The Cyclopedic Law Dictionary · Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The Cyclopedic Law Dictionary
In Canon Law. To betroth; to plight one's faith generally. Bracton, fol. 29a; Co. Litt. 34a. — ^In Feudal Law. To swear fealty, as a tenant to his lord. Spelman. — ^In Old Practice. To make oath.