negotiable Antonyms

unchallengeable undeniable unanswerable unalienable sure settled questionless positive irrefutable irrefragable inflexible unpassable unquestionable unarguable rainproof inarguable beyond dispute confirmed non-negotiable unsubduable light-tight beyond doubt beyond a doubt inexpugnable indubitable indisputable certain categorical barricaded authoritative authentic assured apparent actual accurate accomplished complete conclusive incontrovertible incontestable inalienable impregnable imperviable impassable fixed decided convincing concrete absolute