I₁M₃M₃U₁T₁A₁B₃L₁E₁

15 points

IMMUTABLE is validvalid

not mutable [adj] : IMMUTABILITY [n], IMMUTABLENESS [n], IMMUTABLY [adv]

102,224 of 196,601 in NWL2023·also valid in CSW24

that cannot be changed [adj IMMUTABLY]

117,124 of 280,887 in CSW24·also valid in NWL2023