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