lasting or intended to last or remain unchanged indefinitely
अपरिवर्तनीय
English Usage: Her belief in justice was unwavering despite the challenges.
Hindi Usage: चुनौतियों के बावजूद उसके न्याय में विश्वास अपरिवर्तनीय था।
not changing or unable to be changed
not able to be changed
English Usage: The rules of the game are unchangeable.
Hindi Usage: खेल के नियम अपरिवर्तनीय हैं।