4 letters
- oohs6
- oops7
- oots4
- opts7
- orbs7
- orca7
- orcs7
- ordo5
- ores4
- orts4
- orzo13
- osar4
- oses4
- ossa4
- otic7
- otto4
- ours5
- oust5
- outs5
- owes7
- owls8
- owns8
- owse7
- poco10
- pons8
- poon8
- poor7
- porn8
- port7
- post7
- pots7
- pows10
- pros7
- prow10
- psst7
- rant5
- rato4
- rats4
- raws7
- recs7
- rent5
- rest4
- rets4
- rhos6
- rins5
- riot4
- roan5
- robs7
- rock11
- rocs7
- rods5
- roes4
- roms7
- rood5
- roof7
- rook8
- room7
- root4
- rose4
- rosy6
- rota4
- rote4
- roti4
- rotl5
- roto4
- rots4
- rout5
- rows7
- runs6
- runt6
- rust5
- ruts5
- ryot6
- sacs7
- sans5
- sawn8
- saws7
- scan8
- scar7
- scat7
- scop10
- scot7
- scow10
- scry9
- scut8
- secs7
- sect7
- sent5
- sers4
- sets4
- sewn8
- sews7
- shoo6
- shot6
- show9
- sics7
- sins5
- sirs4
- sits4
- slot5
- slow8
- snaw8
- snit5
- snob8
- snog7
- snot5
- snow8
- soar4
- sobs7
- sock11
- sods5
- soft7
- solo5
- sols5
- sone5
- song7
- sons5
- sook8
- soon5
- soot4
- sops7
- sora4
- sorb7
- sord5
- sore4
- sori4
- sorn5
- sort4
- soth6
- sots4
- sour5
- sous5
- sown8
- sows7
- soys6
- spot7
- sris4
- star4
- staw7
- stew7
- stir4
- stoa4
- stob7
- stop7
- stow7
- stun6
- suns6
- swan8
- swat7
- swob10
- swop10
- swot7
- sync10
- taco7
- tans5
- taos4
- tarn5
- taro4
- tars4
- tass4
- taws7
- tens5
- tern5
- tews7
- thro6
- tics7
- tins5
- tiro4
- tods5
- toes4
- togs6
- toms7
- tone5
- tong7
- tons5
- tony7
- took8
- tool5
- toom7
- toon5
- toot4
- tops7
- tora4
- torc7
- tore4
- tori4
- torn5
- toro4
- torr4
- tors4
- tort4
- tory6
- tosh6
- toss4
- tost4
- tots4
- tour5
- town8
- tows7
- towy9