4 letters
- romp10
- roms7
- rood5
- roof7
- rook8
- room7
- root4
- rope7
- ropy9
- rose4
- rosy6
- rote4
- roti4
- roto4
- rots4
- roue5
- roup8
- rove8
- rows7
- rues5
- ruin6
- rune6
- runs6
- ruse5
- rush7
- ryes6
- sacs7
- sain5
- sane5
- sans5
- saps7
- sari4
- sash6
- scan8
- scar7
- scop10
- scot7
- scow10
- scry9
- scup11
- sear4
- seas4
- secs7
- sect7
- seen5
- seep7
- seer4
- sees4
- sego6
- segs6
- seif7
- seis4
- sels5
- semi7
- send6
- sene5
- sent5
- sept7
- sera4
- sere4
- serf7
- sers4
- sets4
- sewn8
- sews7
- shea6
- shed7
- shes6
- shew9
- shim9
- shin7
- ship9
- shit6
- shiv10
- shmo9
- shod7
- shoe6
- shog8
- shoo6
- shop9
- shot6
- show9
- shri6
- shun8
- sibs7
- sice7
- sick11
- sics7
- side5
- sigh8
- sign7
- sike8
- silo5
- simp10
- sims7
- sine5
- sing7
- sinh7
- sink9
- sins5
- sipe7
- sips7
- sire4
- sirs4
- site4
- sith6
- sits4
- size13
- skep11
- skin9
- skip11
- skis8
- slip8
- sloe5
- slop8
- snap8
- sned6
- snib8
- snip8
- snit5
- snob8
- snog7
- snot5
- snow8
- snye7
- soap7
- soar4
- sobs7
- sock11
- sods5
- soil5
- soke8
- sole5
- soli5
- solo5
- sols5
- some7
- sone5
- song7
- sons5
- sook8
- soon5
- soot4
- soph9
- sops7
- sora4
- sorb7
- sord5
- sore4
- sori4
- sorn5
- sort4
- soth6
- sots4
- soup8
- sour5
- sous5
- sown8
- sows7
- soys6
- spae7
- span8
- spar7
- spas7
- spec10
- sped8
- spew10
- spic10
- spik11
- spin8
- spit7
- spiv11
- spot7
- spry9
- spue8
- spun9
- spur8
- sris4
- step7
- stir4
- stop7
- such10
- suer5
- sues5
- suns6
- supe8
- sups8
- sure5
- swop10
- syce9
- sync10
- syne7
- syph11
- tens5
- tern5
- then7
- thin7
- thio6
- thir6
- this6