éifeachtúil

== Irish == === Alternative forms === éifeachtamhail (obsolete) === Etymology === From éifeacht +‎ -úil. === Adjective === éifeachtúil (genitive singular feminine éifeachtúla, plural éifeachtúla, comparative éifeachtúla) effectual efficient efficacious ==== Declension ==== ==== Synonyms ==== éifeachtach ==== Derived terms ==== éifeachtúlacht neamhéifeachtúil === Mutation === === References === === Further reading === Dinneen, Patrick S. (1904), “éifeaċtaṁail”, in Foclóir Gaeḋilge agus Béarla, 1st edition, Dublin: Irish Texts Society, page 283 Ó Dónaill, Niall (1977), “éifeachtúil”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN