Verbos Español-Inglés
| PRESENTE | PASADO | PARTICIPIO | ESPAÑOL |
| UMPIRE | UMPIRED | UMPIRED | ARBITRAR |
| UNBEND | UNBENT | UNBENT | ENDEREZAR |
| UNDERSTAND | UNDERSTOOD | UNDERSTOOD | ENTENDER |
| UNDERTAKE | UNDERTOOK | UNDERTAKEN | COMPROMETRESE |
| UNDO | UNDID | UNDONE | DESATAR(PAQUETE) |
| UNITE | UNITED | UNITED | UNIR/JUNTAR |
| UNPLUG | UNPLUGGED | UNPLUGGED | DESENCHUFAR |
| UNTIE | UNTIED | UNTIED | DESATAR |
| UPGRADE | UPGRADED | UPGRADED | ASCENDER |
| USE | USED | USED | USAR |