Here's what rhymes with assimilational.
educational relational informational rotational locational invitational occupational operational vocational motivational sensational situational vibrational foundational generational inspirational navigational correlational ideational subnational variational mutational avocational aberrational probational recreational conversational denominational observational conformational gestational translational associational coeducational nonvocational organizational computational gravitational congregational intergenerational improvisational noneducational nonoperational organisational transformational confrontational nondenominational nonoccupational representational interdenominational nonrepresentational Words that almost rhyme with assimilational
occasional available capable payable attainable insatiable saleable inflatable salable breakable trainable assailable bailable claimable gradable incapable obtainable traceable unavailable changeable debatable unattainable unassailable unshakable repayable unbreakable unshakeable unsaleable erasable irreclaimable unsalable embraceable resalable sustainable inescapable interchangeable unchangeable ascertainable explainable irreplaceable unobtainable maintainable degradable untraceable reclaimable mistakable persuadable conveyable nonbreakable exchangeable unsustainable replaceable unmistakable biodegradable microwavable noninterchangeable nonexchangeable