ineffective, ineffectual, uneffective

effective, expedient, persuasive, unexceptionable, salutary, sagacious, ameliorative, withal, ennobling, affective, eloquent, impotent, efficacious, categorical imperative, triune, beneficent, purposive, otiose, remunerative, righteous, indispensable, condign, needful, peaceable, affirmative, enlightened, virtuous, hortatory, prohibitory, praiseworthy, incapable, perfectible, unoffending, ex cathedra, conscionable, perspicuous, intelligible, revisable, inefficacious, divine, infructuous, brahminical, adroit, unflawed, useful, imperfect, whoso, unstinted, omnipotent, infallible, unambiguous, irenic, expeditious, comprehensible, nullities, donative, incommunicable, delusory, forbearing, helpful, obtainable, ineffective, noblest, faits accomplis, aforesaid, adverbial, uncontroversial, omniscient, regulative, facilitative, consequential, aggressing, edifying, emancipatory, initiatory, uncaused, tractable, dilatory, delegable, revisional, cogent, toilsome, prophetic, godly, plebiscitary, costless, economical, sine qua non, undeviating, surest, sufficing, authoritative, sophistical, coequal, preclusive, damnable, systematical, vivifying, forceful, reformable, effortful, curative, ineffectual, proactive, foolproof, stopgap, surer, efficient, preventive, promptest, readiest, remedial, advisable, belter, covert

effectually

hard-hitting, impelling, impressive, potent, strong, telling, trenchant