abiding Synonyms

enduring imperishable ticking timeless towardly unappealable undestroyable remaining undying unmovable utile vestigial weathering termless tarrying residentiary ruly sempervirent sempiternal sequacious stable stabler standing steadfast steady stomaching surviving unceasing unending never-ending unflagging unchanged age-long deep-rooted unvarying occupational open-ended organisational organizational unrecoverable unfaltering unquestioning unmodifiable set in stone unchanging unshaken unchangeable procedural unaltered unfading