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adjective
not producing desired results
"the talks between labor and management were unproductive"
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adjective
not producing or capable of producing
"elimination of high-cost or unproductive industries"
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dry
unproductive especially of the expected results
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vain
unproductive of success
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futile
unproductive of success
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fruitless
unproductive of success
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sleeveless
unproductive of success
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bootless
unproductive of success