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