I. |in+ adjective
Etymology: in- (I) + effective
1. : not producing or incapable of producing an intended effect
ineffective remedy
2. : not capable of performing the required work or duties : incapable
ineffective figurehead
ineffective troops
3. : lacking in aesthetic merit
ineffective design
• in·effectively “+ adverb
• in·effectiveness “+ noun
II. noun
: an ineffective person or thing : one unfit for service (as in an army)