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