invariant Synonyms

constant unvarying stable inflexible invariable fixed unchangeable unalterable unchanging steady immutable changeless enduring unchangingly carved in stone unwavering cast in stone engraved in stone uniform steadfast set in stone unchanged deep-rooted unadjustable written in stone one-note unvaried undistributed cast in concrete entrenched cast in cement hard and fast square solid inalterable ceaseless firm even established equal equable decided continual consistent conserved incessant indifferent set same regular