Patrilineal rhymes with:
matrilineal, matrilineal, matrilineal, matrilineal, lineal, matrilineal, lineal, matrilineal, bicentennial, biennial, centennial, ceremonial, colonial, company'll, decennial, intracranial, lineal, matrilineal, matrimonial, menial, millennial, perennial, quadrennial, testimonial, triennial