Here's what rhymes with believable.
achievable perceivable receivable unbelievable conceivable irretrievable retrievable inconceivable Words that almost rhyme with believable
feasible appreciable peaceable freezable unfeasible inappreciable squeezable indefeasible readable reachable regional agreeable treatable unreadable teachable uneatable cleanable unreasonable redeemable repeatable unbeatable useable unteachable resealable seasonal disagreeable foreseeable unspeakable interregional irredeemable unrepeatable impeachable teacupful concealable unuseable interpretable unimpeachable unforeseeable paracetamol nonredeemable nonseasonal