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