| English | Italian | Spanish | French | German |
|---|---|---|---|---|
| English | Italian | Spanish | French | German |
| face value | valore facciale | valor facial | valeur faciale | nennwert |
| faded | sbiadito | descolorido | fanée | verblassen |
| first day cover | primo giorno | primer dia de circulación | premier jour d'émission | ersttag |
| fiscal stamp | marca da bollo | sello fiscal | timbre-fiscal | steuermarke |
| fish | pesce | pez | poisson | fisch |
| flight | volo | vuelo | vol | Flucht |
| fluorescence | fluorescenza | fluorescencia | fluorescence | fluoreszenz |
| fluorescent paper | carta fluorescente | papel fluorescente | papier fluorescent | fluoreszierendes papier |
| foreign countries | estero | extranjero | étranger | ausland |
| forgery | falsificazione | falsificación | faux | fälschung |
| frame | cornice | marco | cadre | rahmen |
| front | recto | anverso | recto | bildseite |