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