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