Non est factum,
Definition of Non est factum:
A plea that a written agreement is invalid because the defendant was mistaken about its character when signing it.
Plea that the defendant signed a document without fully realizing its nature, such as signing the transfer of a property under the belief that it is a only a guarantee for a debt. Latin for, it is not (his/her) deed.
Meaning of Non est factum & Non est factum Definition
