Vishnu rhymes with:
agnew, ave, bienvenu, keanu, pannu, pelekunu, rilwanu, sununu, tanu, vanunu, zbigniew
Vishnu sounds like:
vaccine, vaccinia, vachon, vacuum, vagina, vaguine, vajna, vaughan, vaughn, vecchione, veegenan, vegan, vegesna, vesmen, vesna, vezina, viacom, viagene, vicino, vicon, vicuna, vigen, viggiano, vigna, vigneau, viscomi, vision, vixen, vizcaino, vizzini, vogan, voisin, voisine, vossen