Here's what rhymes with malfunctional.
functional junctional nonfunctional dysfunctional Words that almost rhyme with malfunctional
subtotal multiple instructional culpable lovable constructional gullible ineluctable loveable refundable touchable adjustable deductible untouchable unlovable nonrefundable clubbable uncrushable conductible combustible inculpable incombustible noncombustible