ineffectual Antonyms

effectual tiptop successful strong sleeved serviceable profitable productive practical powerful potent perspective peopled operative operant omnipotent official multipotent titan usable capable of on the hook legally binding impactful in effect contractual meaningful all-powerful equal to moneymaking worthy worthwhile workmanlike valuable valid utile useful money-making meditative effective correct convenient contributive constructive conducive competent clever businesslike bona fide binding