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