no ifs and or buts

certain evident indisputable irrefutable obvious unassailable unquestionable

actual beyond doubt beyond question binding clear compulsory for sure inarguable incontestable incontrovertible indubitable manifest necessary obligatory open and shut patent positive real sound sure sure thing true unanswerable undoubted

disputable doubtful dubious indefinite obscure questionable refutable uncertain unclear unreliable unsure vague

contestable doubted unproven