Inefficient
Inefficient , adjective
1.
Not efficient; not producing the effect intended or desired, or achieving the effect by unnecessary and excessive expenditure of resources; inefficacious; as, inefficient means or measures; inefficient methods are too expensive.
2.
Incapable of, or indisposed to, effective action; habitually slack or remiss; effecting little or nothing; as, inefficient workmen; an inefficient administrator.