Not wearing a uniform in the course of one's duties(adjective)
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Use "nonuniformed" in a sentence
"• Creating a new pension tier for employees hired in the future that would raise the retirement age for nonuniformed workers."
"Thus the need for distinction between nonuniformed and uniformed combatants."
"Partisan (nonuniformed) warfare is against international law of war, and the generals were allowed to punish a whole village, for example, when partisans hid in civilian populations (they were convicted on other grounds)."