ଅର୍ଥ : Not subject or susceptible to change or variation in form or quality or nature.
ଉଦାହରଣ :
The view of that time was that all species were immutable, created by God.
ସମକକ୍ଷ : immutable
Capable of or tending to change in form or quality or nature.
A mutable substance.ଅର୍ଥ : Remaining the same for indefinitely long times.
ସମକକ୍ଷ : unalterable