| Ex Officio (adv.) From office; by virtue, or as a consequence, of an office; officially. Thesaurus Entries absolute, ascendant, authoritarian, authoritative, authorized, autocratic, clothed with authority, commanding, competent, consequential, considerable, controlling, dominant, duly constituted, eminent, empowered, ex cathedra, governing, great, hegemonic, hegemonistic, imperative, important, influential, leading, mighty, momentous, monocratic, official, potent, powerful, preeminent, prestigious, prominent, puissant, ranking, ruling, senior, substantial, superior, supreme, totalitarian, weighty |