Gradus rhymes with:
addidas, addidas', adidas, aldous, brajdas, broadus, candace, constantinides, cowardice, delgiudice, enterividous, exodus, geddes, georgiades, goddess, hazardous, hondas, horrendous, indus, jaundice, judas, landess, logiudice, madis, midas, modus, pardus, redus, rhodus, sardas, sodus, stewardess, stupendous, tremendous
Gradus sounds like:
garret's, garrets, garrett's, gartzke, garuda's, geerdes, geerts, gerdes, gerdes', gerdts, gerrits, gertsch, gertz, geurts, gewirtz, girds, goertz, goradze, gordji, gordy's, gorrids, gourds, gradco, grades, grads, graduates, graetz, grates, gratis, gratuities, gratuitous, gratz, great's, greathouse, greats, greets, greitz, greta's, gretz, gretzky, grid's, grids, grites, grits, gritz, grodsky, grotesque, grothaus, grotz, growth's, growths, grudge, grudges, guard's, guards, gurtz, gyrates