| Flensburg | Flensburg |
| Flerden | Flerden |
| flesh | carne |
| flesh out | engordar |
| flesh wound | herida superficial |
| flesh-eating | carnívoro |
| Flesh-n-Bone | Flesh-N-Bone |
| fleshliness | sensualidad |
| fleshpot | antro de libertinaje |
| fleshy | carnoso |
| fletcher | flechero |
| Fletcher class destroyer | Clase Fletcher |
| Fletcher Henderson | Fletcher Henderson |
| Flettner ship | Rotor Flettner |
| Fleur de sel | Flor de Sal |
| Fleur Delacour | Fleur Delacour |
| fleur-de-lis | flor de lis |
| fleur-de-lys | flor de lis |
| Fleurieu Peninsula | Península de Fleurieu |
| Flevoland | Flevolanda |
| Flevopolder | Flevolanda |
| flex | encorvarse |
| flexed | torcido |
| Flexi disc | Flexi |
| flexibility | flexibilidad |
| flexible | adaptable |
| flexible approach to environmental protection | planteamiento flexible de la protección del medio ambiente |
| Flexible drive shaft | Palier |
| Flexible working hours | Horario de trabajo flexible |
| flexibly | flexible |
| flexion | encorvadura |
| flexitarianism | flexitarianismo |
| flexitime | horario flexible |
| flexography | flexografía |
| Flexor carpi radialis muscle | Palmar mayor |
| Flexor carpi ulnaris muscle | Cubital anterior |
| flextime | horario flexible |
| flexuose | gafo |
| flibbertigibbet | casquivano |
| flick | golpecito |
| Flick family | Friedrich Flick |
| flick knife | navaja de muelle |
| flick through | hojear |
| flicker | parpadeo |
| Flickertail State | Dakota del Norte |
| flicks | golpea |
| flier | folleto |
| flight | escape |
| Flight and expulsion of Germans during and after WWII | Expulsión de los alemanes tras la Segunda Guerra Mundial |
| flight attendant | auxiliar de vuelo |
| flight crew | tripulación del avión |
| Flight dynamics | Ángulos de navegación |
| flight engineer | ingeniero de vuelo |
| Flight instruments | Instrumentos de control |
| Flight into Egypt | Huida a Egipto |
| flight of capital | fuga de capital |
| Flight of the Phoenix | El vuelo del Fénix |
| Flight of three aircraft | Lima |
| Flight plan | Plan de vuelo |
| Flight to Varennes | Fuga de Varennes |
| flightiness | inconstancia |
| Flightless Cormorant | Phalacrocorax harrisi |
| Flightplan | Plan de vuelo |
| flighty | caprichoso |
| Flims | Flims |
