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