4 letters
- fire7
- firm10
- firn8
- firs7
- flam11
- flan9
- flea8
- fled9
- flee8
- flew11
- flex15
- fley10
- floc11
- floe8
- flog10
- flop11
- flow11
- flub12
- flue9
- flus9
- flux16
- foal8
- foam10
- fobs10
- foes7
- fogs9
- fohn10
- foil8
- foin8
- fold9
- folk12
- fond9
- fons8
- font8
- fool8
- fops10
- fora7
- forb10
- ford8
- fore7
- fork11
- form10
- fort7
- foss7
- foul9
- four8
- fowl11
- foys9
- frae7
- free7
- fret7
- froe7
- frog9
- from10
- frow10
- frug10
- fubs11
- fuds9
- fuel9
- fugs10
- fugu11
- full10
- fume11
- fumy13
- fund10
- funk13
- funs9
- furl9
- furs8
- fury10
- fuse8
- fuss8
- fuze17
- gees6
- gels7
- gems9
- gene7
- gens7
- genu8
- germ9
- geum10
- glee7
- glen8
- glom10
- glue8
- glum11
- gnus8
- goer6
- goes6
- golf10
- gone7
- gore6
- gree6
- grue7
- grum10
- gulf11
- guls8
- gums10
- guns8
- guru8
- heel7
- helm10
- helo7
- heme9
- hems9
- hens7
- here6
- herl7
- herm9
- hern7
- hero6
- hers6
- hoer6
- hoes6
- hole7
- holm10
- hols7
- home9
- hone7
- hons7
- horn7
- hose6
- hour7
- hues7
- hums10
- huns8
- hurl8
- info8
- inro5
- ions5
- ires4
- iron5
- isle5
- jeer13
- jees13
- jefe16
- jeon14
- joes13
- jole14
- keef11
- keel9
- keen9
- kefs11
- keno9
- kens9
- kerf11
- kern9
- knee9
- knur10
- koel9
- kore8
- kors8
- kues9
- kune10
- kuru10
- lame8
- lams8
- lane6
- lars5
- lase5
- leaf8
- lean6
- lear5
- leas5
- leek9
- leer5
- lees5
- leet5
- left8
- legs7
- lehr7
- leis5
- leke9
- leks9
- leku10
- lend7
- leno6
- lens6
- lent6
- less5
- lest5
- lets5
- leud7
- levo9
- leys7
- lief8
- lien6
- lier5
- lies5
- lieu6
- life8
- lime8
- limn9
- limo8
- line6
- lino6
- lins6
- lion6
- lire5
- loaf8