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