Ineffective
Part of speech: adjective
Definition: not having the desired effect; ineffectual lacking in ability; incompetent or inadequate
Example sentence: Homelessness, open air drug use and mental illness - which we all see in this city - are things we've been relying on the DA's office and the jails to deal with. That's really expensive, inhumane and ineffective.
Inefficient
Part of speech: adjective
Definition: Not efficient; not producing the effect intended or desired; inefficacious; as, inefficient means or measures.Incapable of, or indisposed to, effective action; habitually slack or remiss; effecting little or nothing; as, inefficient workers; an inefficient administrator.
Example sentence: Worry is a cycle of inefficient thoughts whirling around a center of fear.