universal

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

a proposition that asserts something of all members of a class

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

“universal experience”

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”

adapted to various purposes, sizes, forms, operations

“universal wrench”

applicable to or common to all members of a group or set

“the play opened to universal acclaim”