4 letters
- pons8
- poon8
- puns9
- quin15
- rins5
- rocs7
- ruin6
- runs6
- sain5
- scan8
- scop10
- scot7
- scow10
- scud9
- scum11
- scup11
- scut8
- shin7
- shoo6
- shun8
- sice7
- sick11
- sics7
- sign7
- silo5
- sine5
- sing7
- sinh7
- sink9
- sins5
- skin9
- snib8
- snip8
- snit5
- snob8
- snog7
- snot5
- snow8
- snub9
- snug8
- sock11
- soil5
- soli5
- solo5
- sone5
- song7
- sons5
- sook8
- soon5
- soot4
- sori4
- sorn5
- souk9
- soul6
- soup8
- sour5
- sous5
- sown8
- spic10
- spin8
- spun9
- stun6
- such10
- suck12
- suit5
- sulu7
- sumo8
- sung8
- sunk10
- sunn7
- suns6
- sync10
- tics7
- tins5
- tons5
- toon5
- tuis5
- tuns6
- udos6
- ulus7
- unai6
- unau7
- unci9
- unco9
- undo7
- unit6
- unto6
- upon9
- uric8
- urns6
- urus6
- vino9
- wino8
- wins8
- wons8
- woos7
- yins7
- yoni7
- zinc17
- zins14
- zoic16
- zoon14
- zoos13