4 letters
- sale5
- sall6
- salp8
- sals5
- salt5
- samp10
- sand6
- sane5
- sang7
- sank9
- sans5
- saps7
- sard5
- sari4
- sark8
- sati4
- saul6
- save8
- sawn8
- scan8
- scar7
- scup11
- seal5
- sear4
- sera4
- shin7
- ship9
- shiv10
- shri6
- shul8
- shun8
- sial5
- sign7
- sild6
- silk9
- sill6
- silo5
- silt5
- sima7
- simp10
- sine5
- sing7
- sinh7
- sink9
- sins5
- sipe7
- sips7
- sire4
- sirs4
- skin9
- skip11
- skua9
- slab8
- slag7
- slam8
- slap8
- slat5
- slaw8
- slay7
- slid6
- slim8
- slip8
- slit5
- slop8
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- snag7
- snap8
- snaw8
- snib8
- snip8
- snit5
- snub9
- snug8
- soap7
- soar4
- soil5
- sola5
- soli5
- sora4
- sori4
- sorn5
- soul6
- soup8
- sour5
- spae7
- spam10
- span8
- spar7
- spas7
- spat7
- spay9
- spaz16
- spic10
- spik11
- spin8
- spit7
- spiv11
- spry9
- spud9
- spue8
- spun9
- spur8
- sris4
- star4
- stir4
- stun6
- suba8
- suer5
- suit5
- sulk10
- sulu7
- sump11
- sung8
- sunk10
- sunn7
- suns6
- supe8
- sups8
- sura5
- surd6
- sure5
- surf8
- swan8
- swap10
- syli7
- tail5
- tain5
- tali5
- tans5
- taps7
- tarn5
- tarp7
- tars4
- taus5
- tavs8
- tils5
- tins5
- tips7
- tirl5
- trap7
- trip7
- tsar4
- tuis5
- tuna6
- tuns6
- tups8
- turn6
- ulan7
- ulna7
- ulus7
- ulva10
- umps11
- unai6
- unau7
- unci9
- unit6
- upas8
- upon9
- urbs8
- urds6
- urea5
- uric8
- urns6
- ursa5
- urus6
- user5
- utas5
- uvea9
- vacs11
- vagi10
- vail9
- vain9
- vair8
- vale9
- vamp14
- vane9
- vang11
- vans9
- vara8
- vars8
- vary10
- vasa8
- vase8
- vast8
- vats8
- vatu9
- vaus9
- vavs12
- vaws11
- veal9
- veil9
- vein9
- vela9
- vena9
- vera8