"changeless" in the adjective sense
1. immutable, changeless
not subject or susceptible to change or variation in form or quality or nature
"the view of that time was that all species were immutable, created by God"
2. changeless, constant, invariant, unvarying
unvarying in nature
"maintained a constant temperature"
"principles of unvarying validity"
3. changeless, unalterable
remaining the same for indefinitely long times
Source: WordNet® (An amazing lexical database of English)
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