| Unterroth | Unterroth |
| Unterschleißheim | Unterschleißheim |
| Unterschneidheim | Unterschneidheim |
| Unterschwaningen | Unterschwaningen |
| Unterschächen | Unterschächen |
| Unterseen | Unterseen |
| Untersiebenbrunn | Untersiebenbrunn |
| Untersiemau | Untersiemau |
| Untersiggenthal | Untersiggenthal |
| Unterstadion | Unterstadion |
| Untersteckholz | Untersteckholz |
| Untersteinach | Untersteinach |
| Unterstinkenbrunn | Unterstinkenbrunn |
| Unterthingau | Unterthingau |
| Untertilliach | Untertilliach |
| Untervaz | Untervaz |
| Unterwachingen | Unterwachingen |
| Unterwalden | Canton Untervaldo |
| Unterwaldhausen | Unterwaldhausen |
| Unterwart | Unterwart |
| Unterwössen | Unterwössen |
| Unterägeri | Unterägeri |
| unthankful | ingrato |
| unthankfulness | ingratitudine |
| unthinkable | impensabile |
| unthinking | avventato |
| unthinkingly | ciecamente |
| unthought | sconsiderato |
| unthread | sfilare |
| untidy | disordinato |
| untie | sciogliere |
| untied | slegato |
| until | prima di |
| until and including | fino e incluso |
| until I am dead | Fin degli estinti |
| until now | ora |
| until she comes | finché non ella viene |
| until the end | fino alla fine |
| Until the End of the World | Fino alla fine del mondo |
| Until the End of Time | Until the End of Time |
| until tomorrow | fino a domani |
| untimeliness | intempestività |
| untimely | prematuro |
| untirable | instancabile |
| untiring | infaticabile |
| untiringly | indefessamente |
| Untitled Korn album | Untitled |
| unto | fino a |
| untold | segreto |
| untouchable | paria |
| Untouchables | Tutti gli uomini del presidente |
| untoward | spiacevole |
| untraceable | irreperibile |
| untrapped | esente |
| Untrasried | Untrasried |
| untreated | grezzo |
| untried | intentato |
| untroubled | imperturbato |
| untrue | falso |
| untrue statement | menzogna |
| untrustworth | infido |
| untruth | menzogna |
| untruthful | falso |
| untruthfulness | falsità |
| untuned | scordato |
| untwine | lievitazione |
| ununbium | ununbio |
| ununennium | ununennio |
| ununhexium | ununhexio |
| ununoctium | ununoctio |
