4 letters
- slip8
- slit5
- slop8
- slot5
- slut6
- snap8
- snip8
- snit5
- snot5
- soap7
- soil5
- sola5
- soli5
- sols5
- sons5
- sops7
- sots4
- soul6
- soup8
- sous5
- span8
- spas7
- spat7
- spic10
- spin8
- spit7
- spot7
- spun9
- stoa4
- stop7
- stun6
- suit5
- suns6
- sups8
- taco7
- tail5
- tain5
- talc8
- tali5
- tans5
- taos4
- taps7
- tass4
- taus5
- tics7
- tils5
- tins5
- tipi7
- tips7
- toil5
- tola5
- tolu6
- tons5
- topi7
- tops7
- toss4
- tuis5
- tuna6
- tuns6
- tups8
- ulan7
- ulna7
- unai6
- unci9
- unco9
- unit6
- unto6
- upas8
- upon9
- utas5