Definition of case–sensitive
: distinguishing between uppercase and lowercase letters in input text Having the Caps Lock key on accidentally can also lead to a frustrating series of “wrong password” alerts when trying to use a case-sensitive password for your office network or Internet provider. — J. D. Biersdorfer, New York Times, 17 May 2001 Unix is case sensitive, and common sense dictates that you print a Unix command the way you'd type it. — Reva Basch, Computerlife, August 1996
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First Known Use of case–sensitive
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