- Sweet seventeen
- Sweet shop
- Syneresis
- Sweet smelling root
- Sweet talk
- Sweet words
- Sweet-brier
- Sweet-cake
- Sweet-meat vendor
- Sweet-meet
- Sweet-oil
- Sweet-smelling
- Sweet-speaking girl
- Sweet-stuff
- Sweet-talking
- Syllabic
- Swimming costume
- Swimming pond
- Swimming pool
- Swimming trunks
- Swimmingly
- Swimmingness
- Swimwear
- Swindle
- Swindle sheet
- Swindler
- Swindlery
- Swine
- Swine flu
- Swine herd
- Swinery
- Swing
- Swing door
- Swing from bought to bough
- Swing wing
- Swinge
- Swingeing
- Swinger
- Swinging
- Swinging cot
- Swinish
- Swinishly
- Swinishness
- Swink
- Swipe
- Swire
- Swirl
- Swish
- Swishy
- Swiss
- Swiss card
- Swiss roll
- Switch
- Switch blade
- Switch off
- Switch on
- Switchback
- Switchboard
- Symptomatically
- Symptomatology
- Symptoms
- Synagogal
- Synagogical
- Synagogue
- Synapse
- Synartesis
- Sync
- Synchromesh
- Synchronism
- Synchronistic
- Synchronization
- Synchronize
- Synchronous
- Synchronously
- Synchrony
- Syncopated
- Syncopation
- Syncope
- Syncretic
- Syncretism
- Syndicalism
- Syndicalist
- Syndicate
- Syndication
- Syndrome
- Syndromic
- Synergy
- Synod
- Synodic
- Synodic period
- Synodical
- Synonym
- Synonym icon
- Synonymic
- Synonymies
- Synonymous
- Synonymy
- Synopsis
- Synoptic
- Synoptic gospels