4 letters
- nibs8
- nice8
- nick12
- nigh9
- nine6
- noir5
- nori5
- noun7
- nubs9
- numb12
- nuns7
- nurd7
- nurl7
- ouch10
- ping10
- pirn8
- prig9
- pugh12
- pung11
- puri8
- quin15
- ragi6
- rain5
- rang7
- rani5
- rein5
- rhus7
- ribs7
- rice7
- rich9
- rick11
- rigs6
- rind6
- ring7
- rink9
- rins5
- rube8
- rubs8
- ruby10
- ruck12
- ruga7
- rugs7
- ruin6
- rune6
- rung8
- runs6
- runt6
- rush7
- ruth7
- shin7
- shri6
- shun8
- sigh8
- sign7
- sing7
- sinh7
- snib8
- snub9
- snug8
- such10
- sugh9
- sung8
- sunn7
- thin7
- thir6
- thru7
- thug9
- ting7
- trig6
- trug7
- tung8
- turn6
- ughs9
- unai6
- unbe9
- unci9
- unco9
- unit6
- urbs8
- urge7
- uric8
- urns6
- vugh13
- whig11
- whin10
- whir9
- wich12
- wing10
- yuch12
- zinc17
- zing16