4 letters
- fido8
- fids8
- fief10
- fife10
- figs9
- fila8
- file8
- fill9
- film11
- filo8
- fils8
- fine8
- fino8
- fins8
- fire7
- firm10
- firn8
- firs7
- fisc10
- fish9
- fist7
- fits7
- five11
- fixt14
- flat8
- flea8
- fled9
- flee8
- flew11
- flex15
- fley10
- flic11
- flip11
- flit8
- floc11
- floe8
- flog10
- flop11
- flow11
- flub12
- flue9
- flus9
- flux16
- foal8
- fobs10
- foci10
- foes7
- fogs9
- foil8
- foin8
- fold9
- folk12
- fons8
- font8
- fool8
- foot7
- fops10
- fora7
- forb10
- ford8
- fore7
- fork11
- form10
- fort7
- foss7
- foul9
- four8
- fowl11
- foys9
- frae7
- frat7
- free7
- fret7
- frig9
- frit7
- friz16
- froe7
- frog9
- from10
- frow10
- frug10
- fubs11
- fuci11
- fuds9
- fuel9
- fugs10
- fuji17
- full10
- fume11
- funs9
- furl9
- furs8
- fury10
- fuse8
- fuss8
- futz17
- fuze17
- gels7
- gelt7
- gest6
- gets6
- gies6
- gift9
- gilt7
- girl7
- giro6
- girt6
- gist6
- gits6
- glue8
- glut8
- goer6
- goes6
- golf10
- gore6
- gout7
- grit6
- grot6
- grue7
- gulf11
- guls8
- gust7
- guts7
- heft9
- heil7
- heir6
- helo7
- herl7
- hero6
- hers6
- hest6
- hets6
- hies6
- hilt7
- hire6
- hist6
- hits6
- hoer6
- hoes6
- hole7
- hols7
- holt7
- hose6
- host6
- hots6
- hour7
- hues7
- hurl8
- hurt7
- huts7
- ices7
- ides5
- idle6
- idol6
- iglu8
- ilea5
- ilex12
- ilks9
- ills6
- info8
- inro5
- into5
- ions5
- iota4
- ired5
- ires4
- iris4
- irks8
- iron5
- isle5
- item7
- jest13
- jets13
- jilt14
- joes13
- jole14
- jolt14
- jots13
- just14
- jute14
- juts14
- kefs11
- keir8
- kerf11
- keto8
- kief11
- kier8
- kifs11
- kilo9
- kilt9
- kirs8
- kist8
- kite8
- kits8
- koel9
- kois8
- kore8
- kors8
- kris8
- kues9