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