unalterable Synonyms

inalterable changeless stout strong substantial well-balanced sustained unavoidable uniform stiff steady steadfast stationary stable sound settled set rigid reverseless unlimber unyielding unfluctuating unexpendable unstoppable nonmodifiable unvarying unchanged unmodifiable stabile set in stone carved in stone long-standing unbreakable unaltered undeviating unchangeable unchanging refractory persistent perpetual inelastic inductile incommutable immutable immovable hard fixed firm final FAST