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