Douglas's rhymes with:
douglass, douglass, douglass, atlas's, dallas's, douglass, nautilus's, necklaces, nicholas's, nicklaus's, surpluses, wireless's
Douglas's sounds like:
decals, decelles, dechellis, degaulle's, diesels, digalakis, disclose, discloses, diskless, dislike, dislikes, doglike, douglas, douglas', douglass, doxologies, doxology, duclos, dyslexia, dyslexic