adj Working or operating properly.
- The other factions believe that those who are Factionless are nomads and outcasts. But they are actually a fully functioning community.
— Mekado Murphy, 'The Divergent Series: Insurgent' Creates New Worlds (2015)
- The old radio is still functioning after all these years.
- Without a functioning lift, the residents had to use the stairs.
- A functioning economy needs stable banks.
noun The way something works, or the fact that it is working.
- Poor sleep can affect the daily functioning of the brain.
- The engineer checked the smooth functioning of every machine in the factory.
- Doctors monitored the functioning of his kidneys.
