a functional set of brakes.
a style of writing in which every word is functional.
an operational aircraft.
delegates elected on a functional rather than a geographical basis.
functional architecture.
functional architecture.
functional deafness.
functional education selects knowledge that is concrete and usable rather than abstract and theoretical.
in running (or working) order.
the dishwasher is now in working order.
the lawnmower is a bit rusty but still usable.
the problem now is not a constitutional one.
it is a functional one.
the toaster was still functional even after being dropped.