- skilful
- skilful physician
- skilled
- skim
- skimpy
- skinflint
- skinny
- see daylight
- sea-border
- sirocco
- see eye to eye
- so far
- split hairs
- set in motion
- sacrificial animal
- sensitivity
- similarly
- singe
- swan of avon
- sack
- smudgy
- sadism
- saintly
- scour
- salt something away
- salver
- sample
- sanction
- sap
- satiety
- saturate
- say-so
- scalding
- scarce
- scenic
- schedule
- scheme
- scientific
- scintilla
- scoop
- scope
- scornful
- scotch
- shock
- scrape
- screw
- scrounger
- searching
- searing
- sententious
- seating
- second
- second-rate
- sedate
- sedition
- self-centred
- seem
- selective
- snot
- sell someone down the river
- send-up
- senile
- separate
- settee
- setting
- suitcase
- simmer down
- shaman
- shamble
- shift
- shatter
- snob
- sheer
- sheepish
- sheer
- shin
- shore
- shriek
- shrink
- shrivel
- shuffle
- shun
- shy
- shuttle
- shy
- side-splitting
- set one's sights
- significant
- silence
- similar
- similitude
- simplify
- simulate
- sincerely
- singularity
- singly
- sissy
- size
- size someone up, size something up
- skirmish