Here's what rhymes with mutable.
suitable immutable unsuitable commutable inscrutable refutable irrefutable disputable indisputable executable Words that almost rhyme with mutable
usable beautiful usual movable crucible cuticle moveable fusible luminal provable reusable unusable dutiable doable mutual unusual juvenile immovable renewable reducible removable inducible improvable unmovable assumable unmoveable irreducible deducible delusional consumable irremovable presumable producible excusable nonrenewable manoeuvrable construable disprovable reproducible inexcusable institutional attitudinal latitudinal constitutional longitudinal distributional unconstitutional