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