invariant Synonyms

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