4 letters
- opus8
- orad5
- orbs7
- orcs7
- ordo5
- ores4
- orle5
- orra4
- orts4
- orzo13
- osar4
- oses4
- ouds6
- ours5
- oust5
- outs5
- ouzo14
- oven9
- over8
- owed8
- owes7
- owls8
- owns8
- owse7
- oxen12
- oxes11
- oyer6
- oyes6
- peds8
- pend9
- pens8
- peon8
- peso7
- pews10
- pods8
- pond9
- pone8
- pons8
- pood8
- poon8
- poor7
- pore7
- porn8
- pose7
- pour8
- pows10
- prod8
- pros7
- prow10
- puds9
- puns9
- pure8
- purr8
- purs8
- quod15
- rads5
- rand6
- rare4
- rase4
- raws7
- read5
- rear4
- rebs7
- recs7
- redd6
- rede5
- redo5
- reds5
- reed5
- rees4
- refs7
- regs6
- rein5
- reis4
- rems7
- rend6
- rent5
- repo7
- reps7
- resh6
- rest4
- rets4
- revs8
- rhos6
- rhus7
- ride5
- rids5
- rind6
- rins5
- rise4
- road5
- roan5
- roar4
- robe7
- robs7
- rocs7
- rode5
- rods5
- roes4
- role5
- roms7
- rood5
- roof7
- rook8
- room7
- root4
- rope7
- rose4
- rosy6
- rote4
- roto4
- rots4
- roue5
- roup8
- rout5
- roux12
- rove8
- rows7
- rube8
- rubs8
- rudd7
- rude6
- rued6
- ruer5
- rues5
- rugs7
- ruin6
- rule6
- rums8
- rune6
- rung8
- runs6
- runt6
- ruse5
- rush7
- rusk9
- rust5
- ruts5
- ryes6
- rynd8
- sade5
- sand6
- sane5
- sard5
- sawn8
- scow10
- scud9
- sear4
- seed5
- seen5
- seer4
- sego6
- send6
- sene5
- sent5
- sera4
- sere4
- serf7
- sers4
- sewn8
- sews7
- shed7
- shew9
- shod7
- shoe6
- shoo6
- show9
- shun8
- side5
- sine5
- sire4
- skew11
- sled6
- slew8
- sloe5
- slow8
- slue6
- slur6
- smew10
- snaw8
- sned6
- snob8
- snog7
- snot5
- snow8
- snub9
- snug8
- snye7
- soar4
- soda5
- sods5
- soke8
- sold6
- sole5
- solo5
- some7
- sone5
- song7
- sons5
- sook8