5 letters
- minis9
- minus10
- muffs15
- mulls11
- munis10
- naifs9
- nails7
- negus9
- neifs9
- nidus8
- nighs10
- nihil9
- nills8
- nisei6
- nisus7
- noils7
- nulls9
- nurls8
- piing11
- pilis9
- pills10
- pilus10
- pings11
- plugs12
- puffs15
- pulis10
- pulls11
- pungs12
- quiff21
- quill17
- quins16
- riffs11
- rills7
- rings8
- ruffs12
- ruing9
- ruins7
- rungs9
- scuff15
- scull11
- segni8
- sengi8
- shill9
- shuln10
- sigil8
- signs8
- sills7
- silly9
- singe8
- sings8
- sinus7
- skiff15
- skill11
- skull12
- slain7
- slang9
- slily9
- sling9
- slink11
- sluff13
- slugs9
- slung10
- slunk12
- snafu10
- snail7
- snell8
- sniff12
- snuff13
- snugs9
- spiff14
- spill10
- stiff11
- still7
- sting8
- stuff12
- stull8
- stung9
- suing9
- suint7
- sulci10
- sulfa10
- sulfo10
- sully10
- swill10
- swing11
- swung12
- tiffs11
- tills7
- tings8
- tuffs12
- tungs9
- ulans8
- ulnas8
- unais7
- unfit10
- unfix17
- unify12
- units7
- unlit8
- unrig9
- until8
- using9
- vigil12
- villi11
- vills11
- wills10
- wings11
- yills9
- zills16
- zings17