4 letters
- sere4
- serf7
- seta4
- snot5
- soar4
- sofa7
- soft7
- sone5
- sora4
- sore4
- sorn5
- sort4
- sour5
- star4
- stoa4
- stun6
- suer5
- suet5
- sunn7
- sura5
- sure5
- surf8
- tace7
- taco7
- tans5
- taos4
- tare4
- tarn5
- taro4
- tars4
- taus5
- tear4
- teas4
- teen5
- tees4
- tens5
- tern5
- toea4
- toes4
- tofu8
- tone5
- tons5
- tora4
- torc7
- tore4
- torn5
- tors4
- tour5
- tree4
- tref7
- true5
- tsar4
- tufa8
- tuna6
- tune6
- tuns6
- turf8
- turn6
- unco9
- unto6
- urea5
- urns6
- ursa5
- user5
- utas5