I₁M₃M₃U₁T₁A₁B₃L₁E₁N₁E₁S₁S₁

19 points

IMMUTABLENESS is validvalid

the quality of being immutable [n IMMUTABLENESSES]

181,071 of 196,601 in NWL2023·also valid in CSW24

the quality of being unalterable or unchanging [n -ES]

117,125 of 280,887 in CSW24·also valid in NWL2023