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