Surest rhymes with:
intourist, poorest, purist, andrist, careerist, centrist, clearest, czarist, deforrest, demorest, fairest, gilchrist, intourist, lyrist, optometrist, poorest, purist, siegrist, sigrist, sperrfrist, zobrist
Surest sounds like:
sarasota, sarchet, scarcity, scariest, scorched, scourged, screeched, searched, searight, seawright, sechrest, sechrist, secrest, secrist, segregate, segregated, segrest, seragut, shahrzad, shirked, shrieked, shrugged, siegrist, sigrist, skyrocket, skyrocketed, surged, surrogate