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Synonyms of operational in English:
operational
See US English definition of operational
See UK English definition of operational
adjective
1‘the two reactors became operational in 1983’
SYNONYMS
up and running, running, working, functioning, operative, in operation, in use, in action, going
in working order, workable, serviceable, functional, usable, viable, ready for action, prepared
ANTONYMS
broken, out of order
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