Achievable rhymes with:
believable, conceivable, inconceivable, receivable, unbelievable, approvable, believable, conceivable, drivable, forgivable, immovable, inconceivable, livable, lovable, microwavable, movable, observable, provable, receivable, removable, solvable, survivable, unbelievable, unforgivable, unlivable, unsolvable
Achievable sounds like:
accessible, accival, aiguebelle, asbell, asbill, asheville, ashville, assubel, azbell, azbill