mutable Antonyms

immutable worthy of trust stabile unchangeable unalterable unchanging unimpeachable unfailing trusty trustworthy true sure steady unmodifiable 24-7 as good as one's word deeply ingrained deeply implanted deeply fixed deeply entrenched deeply embedded deeply rooted as steady as a rock unvarying deep-seated deep-rooted bred-in-the-bone staunch stationary durable devoted dependable deep dedicated credible constant committed changeless certain black letter faithful firm fixed static stable settled set reverseless reliable invariable