invariable Synonyms

constant non-fluctuating unyielding unchanging unalterable unchangeable undeviating unaltered robotlike uniform unfailing undifferentiated treadmill substantial strong stout stiff steady steadfast unwavering long-standing constant quantity well-balanced unfluctuating undiversified unvaried unadjustable reproducible parametric unvarying unchanged nonreversible nonreturnable unmodified unmodifiable stabile set in stone carved in stone stationary static stable intransmutable inflexible incommutable inalterable immutable identical homogeneous hard fixed