unwavering Synonyms

firm steadfast steady stiff unbendable unfaltering unshakable true-blue true tireless resolved trusty unbending uncompromising undaunted unfailing tenacious stubborn rigid rigorous single-minded stable stabler stalwart staunch steely strong strong-minded unflinching unrelenting unremitting tough-minded undeterred unvarying rock-ribbed rock steady steady-going unstoppable unabated unwearying unfluctuating unswerving unflagging stabile unchanging unwearied unhesitating untiring unyielding unshaken