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