His relentless hammering questions and improper statements drove Pistorius to tears.
improper mining could kill the Kabul River and poison the aquifer for generations to come.
Because “improper dependence” is precisely the problem that limits on aggregate contributions are meant to attack.
mid-15c., "not true," from French impropre (14c.), from Latin improprius, from assimilated form of in- "not, opposite of" (see in- (1)) + proprius (see proper). Meaning "not suited, unfit" is from 1560s; that of "not in accordance with good manners, modesty, decency" is from 1739. Related: Improperly (late 14c.).