Common Words:
* sane
* sash
* sawn
* seas
* seat
* self
* sell
* sent
* shed
* ship
* shop
* show
* sick
* side
* sign
* silk
* sing
* sink
* sits
* slap
* slew
* slow
* slug
* snap
* snow
* soap
* sock
* soft
* soil
* sold
* some
* song
* soon
* sore
* sort
* soul
* sound
* soup
* sour
* span
* spat
* stay
* stem
* step
* stop
* such
* suck
* suit
* sung
* swam
* swan
* swat
* swim
* swot
Less Common Words:
* scab
* scud
* slue
* smug
* snob
* soak
* spud
* stab
* stag
* star
* stye
* swab
* swag
This list is not exhaustive, but it should give you a good starting point. If you're looking for words for a specific purpose (like a crossword puzzle), please let me know and I can help you narrow it down.