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