IMPROPER

adjective Etymology: Middle English, from Middle French impropre, from Latin improprius, from in- + proprius proper Date: 15th century not proper: as, not in accord with fact, truth, or right procedure ; incorrect , not regularly or normally formed or not properly so called, not suited to the circumstances, design, or end , not in accord with propriety, modesty, good manners, or good taste , see: indecorous ~ly adverb ~ness noun