Eyewitnesses rhymes with:
witness's, witnesses', bonuses, cardenas's, catacosinos's, ethnos's, guinness's, illnesses, kotsonis's, likenesses, menaces, minuses, salinas's, selinas's, tennis's, witness's, witnesses'
Eyewitnesses sounds like:
eating, eaton's, eddings, eddins, edens, editing, edition's, editions, ethnic, ethnics, ethnos, ethnos's, euthanasia, euthanasia's, euthanize, eyewitness