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