What is Informality?

Legal Definition
The waut of those forms required by law. Informality is a good ground for a plea in abatement. Com. Dig. Abatement, H 1, 6; Lawes, Pl. 106; Gould, Pl. c. 5, part 1, 132.
-- Bouviers Law Dictionary
Legal Definition
Want of legal form. See State v. Gallimon, 24 N. C. 377 ; Franklin v. Mackey, 16 Serg. & R. (Pa.) 118; Hunt v. Curry, 37 Ark. 108.
-- Black's Law Dictionary
Legal Definition
A departure from well-approved forms without loss of meaning. See 24 N. C. 372.
-- Ballentine's Law Dictionary