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