5 letters
- rewan9
- rheas7
- rheum11
- rhumb14
- rhyme12
- roman9
- rouen7
- ruana7
- ruche11
- rugae8
- rumba12
- rumen10
- runes7
- saner6
- serum9
- shame10
- share7
- sharn8
- shear7
- smear8
- snare6
- surah8
- tamer8
- thane8
- tharm10
- therm10
- thrum11
- tuner7
- uhlan10
- ulema10
- ulnae8
- ulnar8
- umber12
- umbra12
- unarm10
- unary9
- unbar10
- under8
- unhat9
- unjam19
- unman11
- unmet10
- unmew13
- uraei6
- urare6
- urase6
- urate6
- urban10
- ureal7
- ureas6
- urine7
- ursae6
- usher8
- usnea7
- yamen11
- yamun12
- yearn8