| Flaach | Flaach |
| Flabiol | Flabiol |
| flac | splash |
| flaccidité | flabbiness |
| Flachau | Flachau |
| flacon | flask |
| flacon à bille | roll-on |
| Flacon à liqueurs ou de parfu | Pomo people |
| Flacourtiaceae | Flacourtiaceae |
| Flacq | Flacq |
| Flag football | Flag football |
| Flagada Jones | Launchpad McQuack |
| Flagel | Flagellum |
| Flagellariaceae | Flagellariaceae |
| flagellation | flagellation |
| flagelle | flagellum |
| flageller | birch |
| Flagelleur mental | Illithid |
| Flagellum | Flagellum |
| Flageoler sur ses jambes | Quake at the knees |
| flageolet | flageolet |
| flagorner | flatter |
| flagornerie | sycophancy |
| flagorneries | sweet talk |
| flagorneur | toady |
| flagorneuse | toady |
| flagrant | sheer |
| flair | aptitude |
| flairer | sense |
| flairer quelque chose | get wind of something |
| Flakpanzer IV | Möbelwagen |
| Flakstad | Flakstad |
| flamand | Flemish |
| Flamand occidental | West Flemish |
| Flamande | Fleming |
| flamant | flamingo |
| Flamant de Cuba | Caribbean Flamingo |
| Flamant des Andes | Andean Flamingo |
| flamant du Chili | Chilean flamingo |
| Flamant nain | Lesser Flamingo |
| Flamant rose | Greater Flamingo |
| flambant | aflame |
| flambant neuf | brand-new |
| Flambe du carbone | Carbon flash |
| flambeau | torch |
| flamber | burn |
| flamberge | flamberge |
| flamboiement | flare |
| flamboyant | flashy |
| Flamboyant bleu | Blue Jacaranda |
| flambée | blaze |
| Flambée du carbone | Carbon flash |
| flamenco | flamenco |
| Flamengo | Flamengo |
| Flames de Calgary | Calgary Flames |
| flamine | flamen |
| Flaming Sideburns | The Flaming Sideburns |
| Flamingant | Flemish movement |
| Flamingantisme | Flemish movement |
| Flamingo Las Vegas | Flamingo Las Vegas |
| flaminique | flamen |
| flamme | flame |
| Flamme de la Liberté | Flame of Liberty |
| Flamme olympique | Olympic Flame |
| Flamme éternelle | Eternal flame |
| Flammivome | Volcano |
| Flan | Pudding |
| flanc | slope |
| flanc de colline | slope |
| Flanc de montagne | Side |
| flanc-de-chien | Dogrib |
| flancher | fail |
| flanchet | flank |
| Flandre | Flanders |
| Flandre française | Flanders |
| Flandre néerlandaise | Dutch Flanders |
| Flandre occidentale | West Flanders |
| Flandre orientale | East Flanders |
| Flandre romane | Romance Flanders |
| Flandre zélandaise | Zeelandic Flanders |
| Flandre-Occidentale | West Flanders |
| Flandre-Orientale | East Flanders |
| Flandres | Flanders |
| Flane | Side |
| flanelle | flannel |
| flanquer | pitch |
| flanquer une raclée | wallop |
| flanquer une raclée à | wallop |
| flanquer une rossée à | wallop |
| flanquer à la porte | throw out |
| flaque | pool |
| flash | flash |
| Flash Gordon | Flash Gordon |
| Flash Iridium | Satellite flare |
| Flash Video | Flash Video |
| flash-back | flashback |
| flashback | flashback |
| flashcard | flashcard |
| Flashdance | Flashdance |
| flasque | weak |
| Flat-Out | FlatOut |
| Flatey | Flatey in Breiðafjörður |
| Flateyjarbók | Flateyjarbók |
| Flatheads | Confederated Salish and Kootenai Tribes of the Flathead Nation |
| Flatiron Building | Flatiron Building |
| Flattement | Oscillation |
| flatter | butter up |
