Unshakable rhymes with:
unshakeable, unshakeable, unshakeable, breakable, unbreakable, unmistakable, unshakeable, amicable, applicable, bankable, breakable, communicable, despicable, drinkable, eradicable, explicable, extricable, impeccable, implacable, impracticable, inapplicable, ineradicable, inextricable, irrevocable, likable, likeable, practicable, remarkable, revocable, talkable, unbreakable, unmistakable, unremarkable, unshakeable, unsinkable, unspeakable, unthinkable, unworkable, workable
Unshakable sounds like:
uncivil, uncouple, unmanageable, unshakeable, unsuccessful, unsuccessfully, unusable