Roup is a word that is not very commonly used, but it refers to a hoarse or rough sound made while speaking or singing. Some synonyms for roup include croak, rasp, huskiness, gruffness, throatiness, and hoarseness. These words all describe a similar sound to roup and can be used in place of it to add more variety to your writing or speech. Depending on the context, some other possible synonyms for roup could include growl, snarl, or bark, if the sound is more aggressive or animalistic. By using synonyms for roup, you can add more detail and nuance to your language and make your writing or speech more interesting and varied.