all-out I. \ˈ ̷ ̷| ̷ ̷\adjective Etymology:all out : exerting every energy and employing every resource (as military, economic, and political) < an all-out offensive > : thoroughgoing and unreserved < the all-out support of the press > < all-out reformers > : without reservation II. adjective : full-blown 2 < an all-out ban >