ar·gu·a·ble I. \ˈärgyəwəbəl, ˈȧg-\adjective : capable of being argued : open to argument, dispute, or question < arguable matters of policy still undecided > II. adjective : that can be plausibly or convincingly argued < an explanation is offered that if not self-evident is at least arguable — G.W.Johnson > • arguablyadverb