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When a person acts inappropriately, as if to have "no class", and news of these acts are distributed throughout the media without being filtered to the general public. The term takes on a deeper meaning if the acts are done by a government employee.
Bill Clinton was so unclassified when he slept with that intern.

Anthony Weiner sent many unclassified texts to women.
by DC Derailleurs August 19, 2013
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