shrewd operator (0 synonym found)

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We don't have any synonyms for shrewd operator yet.

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Definition of shrewd operator:

°A device designed to allow breathing when it would otherwise be hindered, as by a medical condition or the presence of poisonous vapors.
"The house painters were each officially required to wear a respirator, but this was sometimes disregarded in the extreme heat."
Definition of shrewd operator:

°A device designed to allow breathing when it would otherwise be hindered, as by a medical condition or the presence of poisonous vapors.
"The house painters were each officially required to wear a respirator, but this was sometimes disregarded in the extreme heat."
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