Contractual rhymes with:
factual, factual, ineffectual, intellectual, punctual, conceptual, eventual, factual, habitual, ineffectual, intellectual, massmutual, parimutuel, perpetual, punctual, ritual, virtual
factual, factual, ineffectual, intellectual, punctual, conceptual, eventual, factual, habitual, ineffectual, intellectual, massmutual, parimutuel, perpetual, punctual, ritual, virtual