4 letters
- shim9
- shin7
- shit6
- shun8
- shut7
- sibb10
- sibs7
- sice7
- sick11
- sics7
- side5
- sift7
- sign7
- sike8
- silt5
- sima7
- simp10
- sims7
- sine5
- sing7
- sinh7
- sink9
- sins5
- sipe7
- sire4
- site4
- sith6
- sits4
- size13
- skim11
- skin9
- skit8
- slim8
- slit5
- slub9
- slue6
- slum9
- slut6
- smew10
- smit7
- smug10
- smut8
- sned6
- snib8
- snip8
- snit5
- snob8
- snot5
- snub9
- snug8
- snye7
- some7
- sone5
- spec10
- spic10
- spin8
- spit7
- spue8
- spun9
- stab7
- stem7
- step7
- stet4
- stew7
- stey6
- stir4
- stob7
- stub8
- stud6
- stum8
- stun6
- stye6
- suba8
- subs8
- such10
- suck12
- sued6
- suer5
- sues5
- suet5
- suit5
- sumo8
- sump11
- sums8
- sung8
- sunk10
- sunn7
- suns6
- supe8
- sure5
- swim10
- swum11
- syce9
- sync10
- syne7
- tabs7
- tabu8
- tace7
- tain5
- tame7
- tams7
- tans5
- taus5
- team7
- teas4
- teds5
- teem7
- teen5
- tees4
- tegs6
- tels5
- temp10
- tend6
- tens5
- tent5
- term7
- tern5
- test4
- tets4
- tews7
- them9
- then7
- thin7
- this6
- thus7
- tick11
- tics7
- tide5
- tied5
- tier4
- ties4
- tike8
- tile5
- tils5
- time7
- tine5
- ting7
- tins5
- tint5
- tiny7
- tips7
- tire4
- tits4
- toes4
- tomb10
- tome7
- toms7
- tone5
- tons5
- trim7
- true5
- tuba8
- tube8
- tubs8
- tuck12
- tugs7
- tuis5
- tule6
- tump11
- tuna6
- tune6
- tung8
- tuns6
- tups8
- turn6
- tush7
- tusk9
- tuts5
- twin8
- tyes6
- tyin7
- tyne7
- ukes9
- umbo11
- umps11
- unai6
- unbe9
- unci9
- unco9
- unde7
- unit6
- unto6
- urbs8
- uric8
- urns6
- used6
- user5
- uses5
- utas5
- vein9
- vent9
- vest8
- vets8
- vibe11
- vice11
- vies8
- vims11
- vine9
- vise8
- webs10