English Thesaurus

Synonyms of 'inoperative'

(adjective) 
Definition
not working or functioning
The mine has been inoperative since May last year.
Synonyms
out of action
,
useless
He realised that their money was useless in this country.
,
out of order
The espresso machine is out of order.
,
broken
a broken guitar and a rusty snare drum
,
broken-down
a broken-down car
,
ineffective
Reform will continue to be painful and ineffective.
,
buggered (slang, mainly British)
,
invalid
The trial was stopped and the results declared invalid.
,
defective
Retailers can return defective merchandise.
,
ineffectual
the well-meaning but ineffectual jobs programs of the past
, ,
null and void
,
out of service
The photocopier is out of service today.
,
out of commission
,
unserviceable
,
hors de combat (French)
,
on the fritz (US, slang)
, ,
nonactive

Additional synonyms

in the sense of broken
Definition
not functioning
a broken guitar and a rusty snare drum
Synonyms
not working,
not functioning,
on the blink (slang),
on its last legs,
kaput (informal)
in the sense of broken-down
Definition
not in working order
a broken-down car
Synonyms
not in working order,
old,
not functioning,
out of commission,
on the blink (slang),
kaput (informal),
on the fritz (US, slang)
in the sense of defective
Definition
imperfect or faulty
Retailers can return defective merchandise.
Synonyms
not working,
on the blink (slang),
buggy

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Source

Thesaurus for inoperative from the Collins English Thesaurus
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