4 letters
- reps7
- rhus7
- rial5
- rias4
- ribs7
- rids5
- riel5
- rifs7
- rigs6
- rile5
- rill6
- rims7
- rimy9
- rins5
- ripe7
- rips7
- rise4
- risk8
- roil5
- ropy9
- rosy6
- roup8
- rubs8
- ruby10
- rues5
- rugs7
- ruin6
- rule6
- ruly8
- rump11
- rums8
- runs6
- ruse5
- rush7
- rusk9
- rust5
- ruts5
- ryas6
- ryes6
- sail5
- salp8
- sari4
- saul6
- scry9
- scup11
- ship9
- shri6
- shul8
- sial5
- sild6
- silk9
- sill6
- silo5
- silt5
- simp10
- sipe7
- sips7
- sire4
- sirs4
- sizy15
- skip11
- slap8
- slay7
- slid6
- slim8
- slip8
- slit5
- slop8
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- snip8
- soil5
- soli5
- sori4
- soul6
- soup8
- sour5
- spar7
- spay9
- spic10
- spik11
- spin8
- spit7
- spiv11
- spry9
- spud9
- spue8
- spun9
- spur8
- sris4
- stir4
- suer5
- suit5
- sulk10
- sulu7
- sump11
- supe8
- sups8
- sura5
- surd6
- sure5
- surf8
- syli7
- syph11
- tils5
- tips7
- tirl5
- trip7
- tuis5
- tups8
- ugly10
- ulus7
- umps11
- upas8
- upby13
- urbs8
- urds6
- uric8
- urns6
- ursa5
- urus6
- user5
- virl9
- wily10
- wiry9
- wisp10
- yaps9
- yaup10
- yelp10
- yids7
- yill8
- yins7
- yipe9
- yips9
- yird7
- yirr6
- your7
- yuks11
- yule8
- yups10
- yurt7
- ywis9
- zips16