4 letters
- falx15
- fame10
- fane8
- fang10
- fano8
- fans8
- fard8
- fare7
- farl8
- farm10
- faro7
- fart7
- fate7
- faun9
- fave11
- fawn11
- faze16
- feal8
- fear7
- feat7
- feck14
- feed8
- feel8
- fees7
- feet7
- fell9
- felt8
- feme10
- fend9
- fens8
- feod8
- fere7
- fern8
- feta7
- fete7
- fiar7
- fice10
- fico10
- fila8
- file8
- filo8
- fine8
- fino8
- fire7
- firn8
- flab11
- flag10
- flak12
- flam11
- flan9
- flap11
- flat8
- flaw11
- flax15
- flay10
- flea8
- fled9
- flee8
- flew11
- flex15
- fley10
- flic11
- floc11
- floe8
- flog10
- flop11
- flow11
- flub12
- flue9
- foal8
- foam10
- fobs10
- foci10
- foes7
- fohn10
- foil8
- foin8
- fold9
- folk12
- fond9
- fons8
- font8
- fool8
- fora7
- forb10
- ford8
- fore7
- fork11
- form10
- fort7
- foul9
- four8
- fowl11
- frae7
- frag9
- frap10
- frat7
- fray9
- free7
- fret7
- froe7
- frog9
- from10
- frow10
- fuel9
- furl9
- fyce12
- gaen7
- gale7
- gane7
- gaol7
- garb9
- gear6
- gene7
- glee7
- glen8
- glob10
- gnar7
- goal7
- goer6
- golf10
- gone7
- gore6
- grab9
- gran7
- gree6
- haen7
- hale7
- half10
- halo7
- hare6
- harl7
- heal7
- hear6
- hebe9
- heel7
- helo7
- herb9
- here6
- herl7
- hern7
- hero6
- hoar6
- hoer6
- hole7
- hone7
- hora6
- horn7
- icon8
- ilea5
- info8
- inro5
- iron5
- jane14
- jarl14
- jean14
- jeer13
- jefe16
- jeon14
- jole14
- kale9
- kane9
- kaon9
- karn9
- kbar11
- keef11
- keel9
- keen9
- keno9
- kerb11
- kerf11
- kern9
- knar9
- knee9
- knob12
- koan9
- koel9
- kola9
- kore8
- labs8
- lace8
- lack12
- lacs8
- lacy10
- lade6
- laic8
- lain6
- lair5
- lake9
- lamb11
- lame8
- land7
- lane6
- lang8
- lank10
- lard6
- lari5
- lark9
- lars5
- lase5