functional Antonyms

organic nonfunctional dysfunctional non-functional unfunctional gone kaput unproductive inoperable unusable offline unworkable nonsurgical nonstructural nonproductive nonoperational malfunctioning busted nonlinear on the blink on the fritz out of commission not in working order not functioning gone phut gone haywire conked out acting up as useful as a chocolate teapot not working useful as a chocolate teapot unserviceable unrepaired undoable unreachable out of whack out of service out of order out of gear dud knackered broken-down futile fruitless flaky faulty effectless down dormant defective decorative