ef·fec·tu·al 
/ɪˈfɛktʃəwəl/ adjective
/ɪˈfɛktʃəwəl/ adjective [more effectual; most effectual] formal : producing a desired result or effect
▪ an effectual [=effective] remedy — opposite ineffectual
▪ an effectual [=effective] remedy — opposite ineffectual
— ef·fec·tu·al·ly /ɪˈfɛktʃəwəli/ adverb
▪ The law would effectually bar new development in the neighborhood.
/ɪˈfɛktʃəwəli/ adverb ▪ The law would effectually bar new development in the neighborhood.
