improper
Cross references:
1. indecorous
im.prop.er \(')im-'pra:p-*r\ aj [MF impropre, fr. L improprius, fr. in- +
proprius prop]er : not proper : as : not accordant with fact or right
procedure : INCORRECT {~ inference} : not regularly or normally formed or
not properly so called : not suited to the circumstances, design, or end
{~ medicine} : not in accord with propriety, modesty, or good manners :
INDECENT {~ language} - im.prop.er.ly av
Webster's English Dictionary