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