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