Antonyms of adj operational

3 of 4 senses of operational

Sense 2
functional, usable, useable, operable, operational -- (fit or ready for use or service; "the toaster was still functional even after being dropped"; "the lawnmower is a bit rusty but still usable"; "an operational aircraft"; "the dishwasher is now in working order")

INDIRECT (VIA serviceable) -> unserviceable -- (not ready for service; "unserviceable equipment may be replaced")

Sense 3
operational (vs. nonoperational) -- ((military) of or intended for or involved in military operations)

nonoperational (vs. operational), inactive -- ((military) not involved in military operations)

Sense 4
operational, in operation (predicate), operating (prenominal) -- (being in effect or operation; "de facto apartheid is still operational even in the `new' African nations"- Leslie Marmon Silko; "bus service is in operation during the emergency"; "the company had several operating divisions")

INDIRECT (VIA operative) -> inoperative -- (not working or taking effect; "an inoperative law")

Similarity of adj operational

4 senses of operational

Sense 1
operational -- (pertaining to a process or series of actions for achieving a result; "operational difficulties"; "they assumed their operational positions")

Sense 2
functional, usable, useable, operable, operational -- (fit or ready for use or service; "the toaster was still functional even after being dropped"; "the lawnmower is a bit rusty but still usable"; "an operational aircraft"; "the dishwasher is now in working order")
       => serviceable (vs. unserviceable) -- (ready for service or able to give long service; "serviceable equipment"; "heavy serviceable fabrics")

Sense 3
operational (vs. nonoperational) -- ((military) of or intended for or involved in military operations)
       => active, combat-ready, fighting (prenominal) -- (engaged in or ready for military or naval operations; "on active duty"; "the platoon is combat-ready"; "review the fighting forces")
       => effective -- (ready for service; "the fort was held by about 100 effective soldiers")

Sense 4
operational, in operation (predicate), operating (prenominal) -- (being in effect or operation; "de facto apartheid is still operational even in the `new' African nations"- Leslie Marmon Silko; "bus service is in operation during the emergency"; "the company had several operating divisions")
       => operative (vs. inoperative) -- (being in force or having or exerting force; "operative regulations"; "the major tendencies operative in the American political system")