- Smoothie
- Smoothly
- Smote
- Sms
- Smuggler
- Snaffle
- Snail's pace
- Snake-dance
- Snake-doctor
- Snakebite
- Snakehead fish
- Snuggery
- Snakily
- Snakishly
- Snaky
- Snappy
- Snarky
- Snarl
- Snarl up
- Snary
- Sneak current
- Sneak thief
- Sneaky
- Sneap
- Sneering
- Snide
- Sniff
- Sniffer
- Sniffily
- Sniffy
- Snifter
- Snit
- Snob
- Snobbery
- Snog
- Snoop
- Snoopy
- Snoot
- Snootily
- Snooty
- Snot
- Snow blindness
- Snow leopard
- Snowdrop
- Snowfall
- Snowfield
- Snowflake
- Snowish
- Snowshoe
- Snubby
- Snuff
- So far
- So far so good
- So many
- So much
- So much so that
- So soon
- Soaking
- Soap-boiling
- Soap-bubble
- Soar
- Sob out
- Sober-minded
- Social conscience
- Sock away
- Social democracy
- Social justice
- Social order
- Social services
- Socialism
- Socialist
- Socialite
- Sociological
- Sock
- Sod
- Sodding
- Sodom
- Sodomise
- Soft
- Soft ball
- Soft drug
- Soft focus
- Soft furnishing
- Soft spot
- Soft tack
- Soft witted
- Soften
- Softly
- Softy
- Soil
- Soiled cloth
- Solace oneself with
- Solar cell
- Solar day
- Solar eclipse
- Solar energy
- Solar month
- Solar plexus
- Solarism
- Solarium