adj. 25B6; adjective
an ineffective scheme : UNSUCCESSFUL, unproductive, fruitless, unprofitable, abortive, futile, purposeless, useless, worthless, ineffectual, inefficient, inefficacious, inadequate; feeble, inept, lame; archaic bootless.
an ineffective president : INEFFECTUAL, inefficient, inefficacious, unsuccessful, powerless, impotent, inadequate, incompetent, incapable, unfit, inept, weak, poor; informal useless, hopeless.