business casual

noun

Definition of business casual 

chiefly US

: a style of dressing for white-collar employees that is less formal than traditional business attire I sat at my desk the other afternoon, dressed in business casual, and wistfully fingered my most recent pay stub. … And I thought as I've thought before: perhaps it's no coincidence that business casual is sweeping the country just as white-collar job security evaporates.— Jay Weiser, New Republic, 26 Feb. 1996

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First Known Use of business casual

1968, in the meaning defined above

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The first known use of business casual was in 1968

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