Not efficient; not producing the effect intended or desired, or achieiving the effect by unnnecessary and excessive expenditure of resources; inefficacious; as, inefficient means or measures; inefficient methods are too expensive.

Incapable of, or indisposed to, effective action; habitually slack or remiss; effecting little or nothing; as, inefficient workmen; an inefficient administrator.

wasteful of time or energy Minnehaha: Point-Source Pollution