variable Antonyms

invariable immutable unchangeable unalterable unchanging constant unmodifiable set in stone carved in stone orchestrate long-lasting landline robotlike unadaptable uniform steady egalitarian at different times nonreturnable completely set cast in stone cast in cement undiversified preset hard and fast even-stevens even steven unerasable unvarying cast in concrete all over but the shouting 24-7 unflagging stationary static fixed firm even equal equable consistent comparable commensurate changeless certain cast iron black letter alike given hebdomadal