4 letters
- fila8
- file8
- fill9
- film11
- filo8
- fils8
- find9
- fine8
- fink12
- fino8
- fins8
- fire7
- firm10
- firn8
- firs7
- fisc10
- five11
- flag10
- flan9
- flea8
- fled9
- flee8
- flew11
- flex15
- fley10
- flic11
- flip11
- flit8
- floc11
- floe8
- flog10
- flop11
- flow11
- flue9
- foal8
- foci10
- foes7
- fogs9
- fogy11
- fohn10
- foil8
- foin8
- fold9
- folk12
- fond9
- fons8
- font8
- fool8
- fora7
- forb10
- ford8
- fore7
- fork11
- form10
- fort7
- foul9
- four8
- fowl11
- frae7
- frag9
- free7
- fret7
- frig9
- frit7
- friz16
- froe7
- frog9
- from10
- frow10
- frug10
- fuci11
- fuel9
- furl9
- fyce12
- gaen7
- gain7
- gale7
- gane7
- gaol7
- gear6
- geck13
- geld8
- gels7
- gelt7
- gene7
- gens7
- gent7
- genu8
- germ9
- gibe9
- gied7
- gien7
- gies6
- gift9
- gild8
- gill8
- gilt7
- gink11
- gins7
- gird7
- girl7
- girn7
- giro6
- girt6
- give10
- gled8
- glee7
- gleg9
- glen8
- gley9
- glia7
- glib10
- glim10
- glob10
- glom10
- glop10
- glow10
- glue8
- gnar7
- goal7
- goer6
- goes6
- gold8
- golf10
- gone7
- gong9
- goof9
- goon7
- gore6
- gorp9
- gory8
- gown10
- gran7
- gree6
- grew9
- grey8
- grid7
- grig8
- grim9
- grin7
- grip9
- grit6
- grog8
- grot6
- grow9
- grue7
- gulf11
- gyre8
- gyri8
- gyro8
- heil7
- heir6
- helo7
- herl7
- hern7
- hero6
- hili7
- hire6
- hoer6
- hole7
- hone7
- hong9
- horn7
- iced8
- ices7
- icon8
- idle6
- idol6
- iglu8
- ikon9
- ilea5
- ilex12
- ilia5
- inch10
- info8
- inia5
- inly8
- inro5
- inti5
- into5
- ions5
- ired5
- ires4
- irid5
- iris4
- iron5
- isle5
- jeon14
- join14
- jole14
- keir8
- keno9
- kerf11
- kern9
- kief11
- kier8
- kiln10
- kilo9
- kine9
- king11