non negotiable on white paper

negotiable white paper absolute inflexible unalterable unchangeable unquestionable uncompromising irrevocable rigorous nonnegotiable terms fixed set unyielding stern unbending immutable unmodifiable decisive resolute unmovable unshakable rigid undebatable unappealable stone unchallengeable unbreakable unconditional settled stance position incontestable irrefutable determined unvarying unquestioned rule principle unwavering undeniable unarguable unassailable unanswerable requirement unshakeable unswerving condition demand aspect