'nonfunctional' definitions:

Definition of 'nonfunctional'

From: WordNet
adjective
Not having or performing a function [ant: functional]
adjective
Not performing or able to perform its regular function; "a malfunctioning valve" [syn: malfunctioning, nonfunctional] [ant: functioning]

Definition of 'nonfunctional'

From: GCIDE
  • nonfunctional \nonfunctional\ adj.
  • 1. Not having or performing a function. [Narrower terms: {cosmetic, decorative, ornamental ] Also See: unserviceable. functional [WordNet 1.5]
  • 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.
  • Syn: malfunctioning, unserviceable, out of order. [WordNet 1.5] nonglutenous