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