Not having or performing a function. (Narrower terms: cosmetic, decorative, ornamental) Also See: unserviceable. Antonym: functional.
2.
Not performing or able to perform its regular function; as, the yard was littered with nonfunctional vehicles waiting to be repaired. (Narrower terms: down(predicate)). Antonym: functioning.
Synonyms:malfunctioning, unserviceable, out of order.
