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