universal

(linguistics) a grammatical rule (or other linguistic feature) that is found in all languages

(logic) a proposition that asserts something of all members of a class

a behavioral convention or pattern characteristic of all members of a particular culture or of all human beings; "some form of religion seems to be a human universal"

coupling that connects two rotating shafts allowing freedom of movement in all directions; "in motor vehicles a universal joint allows the driveshaft to move up and down as the vehicle passes over bumps"

of worldwide scope or applicability; "an issue of cosmopolitan import"; "the shrewdest political and ecumenical comment of our time"- Christopher Morley; "universal experience"

applicable to or common to all members of a group or set; "the play opened to universal acclaim"; "rap enjoys universal appeal among teenage boys"

adapted to various purposes, sizes, forms, operations; "universal wrench", "universal chuck"; "universal screwdriver"