5 letters
- arcus9
- buffs15
- caffs14
- chuff17
- coffs14
- cruds10
- cruse9
- crush11
- crust9
- cuffs15
- cuifs12
- curbs12
- curds10
- cures9
- curfs12
- curls10
- curns10
- currs9
- curse9
- curst9
- duffs13
- ecrus9
- ficus12
- focus12
- fours9
- frugs11
- fucks16
- fucus13
- furls10
- gruff14
- guffs14
- huffs14
- luffs13
- muffs15
- puffs15
- raffs11
- riffs11
- rucks13
- ruffe12
- ruffs12
- scarf11
- scaur9
- scoff14
- scour9
- scrub12
- scrum12
- scuff15
- scurf12
- sluff13
- snuff13
- stuff12
- sucre9
- surfs9
- surfy11
- tuffs12
- turfs9
4 letters
- arcs7
- arfs7
- buff14
- burs8
- caff13
- cars7
- coff13
- corf10
- cors7
- cris7
- crud9
- crus8
- crux15
- cubs11
- cuds9
- cues8
- cuff14
- cuif11
- cups11
- curb11
- curd9
- cure8
- curf11
- curl9
- curn9
- curr8
- curs8
- curt8
- cusk12
- cusp11
- cuss8
- cuts8
- duff12
- ecru8
- ecus8
- effs10
- feus8
- firs7
- fisc10
- flus9
- four8
- frug10
- fubs11
- fuci11
- fuck15
- fuds9
- fugs10
- funs9
- furl9
- furs8
- fury10
- fuse8
- fuss8
- guff13
- huff13
- luff12
- muff14
- offs10
- orcs7
- ours5
- puff14
- purs8
- raff10
- recs7
- refs7
- rhus7
- riff10
- rifs7
- rocs7
- rubs8
- ruck12
- rues5
- ruff11
- rugs7
- rums8
- runs6
- ruse5
- rush7
- rusk9
- rust5
- ruts5
- scar7
- scry9
- scud9
- scum11
- scup11
- scut8
- serf7
- slur6
- sour5
- spur8
- such10
- suck12
- suer5
- sura5
- surd6
- sure5
- surf8
- tuff11
- turf8
- urbs8
- urds6
- uric8
- urns6
- ursa5
- urus6
- user5
3 letters
- aff9
- arc6
- arf6
- ars3
- bur7
- bus7
- car6
- cis6
- cor6
- cos6
- cry8
- cub10
- cud8
- cue7
- cum10
- cup10
- cur7
- cut7
- ecu7
- eff9
- efs6
- ers3
- far6
- fas6
- fer6
- feu7
- fir6
- flu8
- for6
- fou7
- fro6
- fry8
- fub10
- fud8
- fug9
- fun8
- fur7
- iff9
- ifs6
- jus13
- mus7
- nus5
- off9
- orc6
- ors3
- our4
- pur7
- pus7
- ras3
- rec6
- ref6
- res3
- rif6
- roc6
- rub7
- rue4
- rug6
- rum7
- run5
- rut4
- sac6
- sau4
- sec6
- ser3
- sic6
- sir3
- sou4
- sri3
- sub7
- sue4
- sum7
- sun5
- sup7
- suq13
- uns5
- ups7
- urb7
- urd5
- urn5
- use4
- uts4