Here's what rhymes with classificational.
vocational avocational educational navigational locational subnational nonvocational occupational operational relational informational observational rotational sensational situational vibrational foundational associational ideational variational invitational aberrational gravitational recreational conversational motivational conformational congregational generational gestational inspirational transformational correlational coeducational mutational probational organizational representational translational noneducational computational denominational organisational confrontational improvisational nonoccupational nonoperational intergenerational nondenominational interdenominational nonrepresentational Words that almost rhyme with classificational
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 traceable unchangeable unobtainable unsustainable repayable unbreakable degradable erasable irreclaimable reclaimable persuadable conveyable resalable inescapable exchangeable explainable inflatable maintainable untraceable mistakable unmistakable interchangeable biodegradable irreplaceable replaceable embraceable nonbreakable microwavable nonexchangeable noninterchangeable