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