inalterable Synonyms

unalterable unchangeable steadfast stable single-minded unfaltering set rigid resolute relentless permanent steady unflinching unvarying biorhythm unchanged unmodifiable unwavering unchanging unrelenting unmovable obstinate ironclad invincible determinate constant circumscribed changeless certain assiduous arranged agreed adamant dogged enduring invariant invariable inflexible indomitable incommutable immutable immovable fixed firm abiding