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