4 letters
- fish9
- fist7
- fits7
- flab11
- flam11
- flic11
- flip11
- flit8
- floc11
- floe8
- flog10
- flop11
- flow11
- flub12
- flue9
- flus9
- flux16
- foal8
- foam10
- fobs10
- foci10
- foes7
- fogs9
- foil8
- foin8
- fold9
- folk12
- fons8
- fool8
- fops10
- fora7
- forb10
- ford8
- fore7
- fork11
- form10
- fort7
- foss7
- foul9
- four8
- fowl11
- foys9
- frig9
- frit7
- friz16
- froe7
- frog9
- from10
- frow10
- frug10
- fubs11
- fuci11
- fuds9
- fuel9
- fugs10
- fugu11
- fuji17
- full10
- fume11
- fumy13
- funs9
- furl9
- furs8
- fury10
- fuse8
- fuss8
- gibs9
- girl7
- giro6
- glib10
- glim10
- glob10
- glom10
- glum11
- gobs9
- golf10
- grim9
- grub10
- grum10
- gulf11
- guls8
- gums10
- guru8
- hobs9
- holm10
- hols7
- hour7
- hubs10
- hums10
- hurl8
- iamb10
- ibis7
- idol6
- iglu8
- ilks9
- ills6
- imps10
- info8
- inro5
- ions5
- ires4
- iris4
- irks8
- iron5
- isba7
- isle5
- isms7
- jibs16
- jism16
- jobs16
- kifs11
- kilo9
- kirs8
- kobs11
- kois8
- kors8
- kris8
- kuru10
- labs8
- lair5
- lamb11
- lams8
- lari5
- lars5
- leis5
- liar5
- libs8
- lido6
- lids6
- lief8
- lier5
- lies5
- lieu6
- life8
- lift8
- lima8
- limb11
- lime8
- limn9
- limo8
- limp11
- limy10
- lino6
- lins6
- lion6
- lips8
- lira5
- lire5
- liri5
- lisp8
- list5
- lits5
- litu6
- loaf8
- loam8
- lobe8
- lobo8
- lobs8
- loci8
- loft8
- logs7
- loin6
- loof8
- loom8
- loos5
- lops8
- lord6
- lore5
- lorn6
- lory7
- lose5
- loss5
- lost5
- loti5
- lots5
- loud7
- loup9
- lour6
- lout6
- lows8
- luau7
- lube9
- lues6
- luff12
- lugs8
- lulu8
- lump12
- lums9
- lure6
- lurk10
- lush8
- lust6
- luvs10
- mail8
- mair7
- marl8
- mars7
- maul9
- mels8
- meou8