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