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