Lacking formality, casual, not drafted or executed in a manner that complies with accepted legal form. Deficient in legal form; inartificially drawn up.
INFORMAL
TheLaw.com Law Dictionary & Black's Law Dictionary 2nd Ed.
TheLaw.com Law Dictionary & Black's Law Dictionary 2nd Ed.
Lacking formality, casual, not drafted or executed in a manner that complies with accepted legal form. Deficient in legal form; inartificially drawn up.