changeless
1. [ adjective ] not subject or susceptible to change or variation in form or quality or nature
Synonyms: immutable
Examples:

"the view of that time was that all species were immutable, created by God"

Related terms: mutable
2. [ adjective ] persistent in occurrence and unvarying in nature
Synonyms: constant steady unvarying invariant
Examples:

"maintained a constant temperature" "a constant beat" "principles of unvarying validity" "a steady breeze"

Related terms: invariable
3. [ adjective ] remaining the same for indefinitely long times
Synonyms: unalterable
Related terms: unchangeable
Similar spelling:   changeling
  chancel
  chancellor