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