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