Transsexual rhymes with:
annual, asexual, continual, emanuel, emmanuel, manual, annual, asexual, audiovisual, biannual, bisexual, conceptual, consensual, continual, contractual, emanuel, emmanuel, eventual, factual, gradual, habitual, ineffectual, intellectual, manual, massmutual, menstrual, parimutuel, pascual, perpetual, punctual, residual, ritual, sexual, virtual
Transsexual sounds like:
tranquil, trenkle, triangle, tringali, trinkle, tyrannical