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