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