4 letters
- snot5
- snub9
- soap7
- sobs7
- soma7
- sons5
- soon5
- soot4
- sops7
- sots4
- soup8
- sous5
- spam10
- span8
- spas7
- spat7
- spaz16
- spin8
- spit7
- spot7
- spun9
- stab7
- stat4
- stoa4
- stob7
- stop7
- stub8
- stum8
- stun6
- suba8
- subs8
- suit5
- sumo8
- sump11
- sums8
- suns6
- sups8
- tabs7
- tabu8
- tain5
- tamp10
- tams7
- tans5
- taos4
- taps7
- tass4
- tats4
- taus5
- taut5
- tins5
- tint5
- tipi7
- tips7
- titi4
- tits4
- toit4
- tomb10
- toms7
- tons5
- toom7
- toon5
- toot4
- topi7
- tops7
- toss4
- tost4
- tots4
- tout5
- tuba8
- tubs8
- tuis5
- tump11
- tuna6
- tuns6
- tups8
- tuts5
- umbo11
- umps11
- unai6
- unit6
- unto6
- upas8
- upon9
- utas5
- zaps16
- zins14
- zips16
- ziti13
- zits13
- zoom16
- zoon14
- zoos13