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