[in.suf.fi.cien.cy] n, pl -cies (1526) 1: the quality or state of being insufficient: as a: lack of mental or moral fitness: incompetence "the ~ of this person for public office" b: lack of adequate supply "~ of provisions" c: lack of physical power or capacity; specif: inability of an organ or body part to function normally
2: something that is insufficient or falls short of expectations