4 letters
- fems10
- fens8
- feod8
- fere7
- fern8
- fess7
- fets7
- feud9
- feus8
- fiar7
- fibs10
- fice10
- fico10
- fido8
- fids8
- fief10
- fife10
- figs9
- file8
- film11
- filo8
- fils8
- fine8
- fino8
- fins8
- fire7
- firm10
- firn8
- firs7
- fisc10
- fish9
- fist7
- fits7
- five11
- fley10
- flic11
- floc11
- floe8
- flub12
- flue9
- flus9
- foam10
- fobs10
- foci10
- foes7
- fogs9
- fogy11
- foil8
- foin8
- fons8
- food8
- fool8
- foot7
- fops10
- fora7
- forb10
- ford8
- fore7
- fork11
- form10
- fort7
- foss7
- foul9
- four8
- foxy16
- foys9
- fozy18
- frae7
- fray9
- free7
- fret7
- frig9
- frit7
- friz16
- froe7
- frog9
- from10
- frow10
- frug10
- fubs11
- fuci11
- fuck15
- fuds9
- fuel9
- fugs10
- fuji17
- fume11
- fumy13
- funs9
- furl9
- furs8
- fury10
- fuse8
- fuss8
- fuze17
- fyce12
- fyke13
- gems9
- germ9
- geum10
- gibe9
- gibs9
- gies6
- giro6
- gobo9
- gobs9
- goby11
- goer6
- goes6
- goof9
- goos6
- gore6
- gory8
- goys8
- grey8
- grim9
- grub10
- grue7
- grum10
- gums10
- guys9
- gybe11
- gyms11
- gyre8
- gyri8
- gyro8
- heir6
- hems9
- herb9
- herm9
- hero6
- hers6
- hies6
- hire6
- hobo9
- hobs9
- hoer6
- hoes6
- home9
- homo9
- homy11
- hoof9
- hose6
- hour7
- hoys8
- hubs10
- hues7
- huic10
- hums10
- iamb10
- ibex14
- ibis7
- iced8
- ices7
- ichs9
- icky13
- icon8
- idem8
- ides5
- iffy12
- immy12
- imps10
- inby10
- info8
- inro5
- ions5
- ired5
- ires4
- iris4
- irks8
- iron5
- isba7
- isle5
- isms7
- item7
- jibe16
- jibs16
- jism16
- jobs16
- joes13
- joey15
- joys15
- jube17
- jury16
- kefs11
- keir8
- kerb11
- kerf11
- keys10
- kibe11
- kief11
- kier8
- kifs11
- kirs8
- kobo11
- kobs11
- kois8
- kore8
- kors8
- kris8