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