ISSINT. This is a Norman French word which signifies thus, so. It has given the name to a part of a plea, because when pleas were in that language this word was used. In actions founded on deeds, the defendant may, instead of pleading non est factum in the common form, allege any special matter which admits the execution of the writing in question, but which, nevertheless, shows that it is not in law his deed; and may conclude with and so it is not his deed; as that the writing was delivered to A B as an escrow, to be de-livered over on certain conditions, which have not been complied with, "and so it is not his act;" or that at, the time of making the writing, the defendant was a feme covert,: and so it is not her act." Bac. Ab. Pleas, H 3, I 2; Gould on Pl. c. 6, part 1, 64.