inefficacious Synonyms

ineffective sidelined unfruitful unfit unable thwarted sterile purposeless profitless powerless pointless otiose unsuccessful useless unrewarding uneffective unproductive counterproductive in vain dysfunctional unavailing unprofitable worthless weak vain null nugatory lame futile fruitless forceless feeble feckless failed empty effectless bootless barren hopeless idle impotent inservient inoperative inept inefficient inefficaciously ineffectual incompetent incapable inadequate