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