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