unchangeable 0276 - ametathetos {am-et-ath'-et-os}; from 0001 (as a negative particle) and a derivative of 3346; {unchangeable}, or (neuter as abstract) unchangeability: -- immutable(-ility).
unchangeable 0531 - aparabatos {ap-ar-ab'-at-os}; from 0001 (as a negative particle) and a derivative of 3845; not passing away, i.e. untransferable (perpetual): -- {unchangeable}.