| studioso | bookish |
| stuello | tampon |
| stufa | oven |
| stufa a gas | gas burner |
| stufa elettrica | electric heater |
| stufa termostatica | incubator |
| stufare | stew |
| stufarsi di | get tired of |
| Stufatino | Beef stew |
| stufato | stew |
| Stufato di manzo | Beef stew |
| Stulln | Stulln |
| STUN | Simple traversal of UDP over NATs |
| stunt-woman | stuntwoman |
| stuntman | stuntman |
| stuoia | mat |
| stuoino | doormat |
| stuolo | crowd |
| Stupa | Stupa |
| stupefacente | bewildering |
