- justify
- c.1300, "to administer justice," also "to show (something) to be just or right," from O.Fr. justifer, from L. justificare "act justly toward, make just," from justificus "dealing justly, righteous," from justus "just" (see just (adj.)) + root of facere "to do" (see factitious). Meaning "to make exact" (now largely restricted to typesetting) is from 1551.