- self-denial
- self-distrust
- self-employed
- self-explanatory
- self-governing
- self-interest
- self-interested
- self-restraint
- selfless service
- sell one's soul for
- sell one's soul to the devil
- seminar
- sell someone out
- sell someone short
- semeiometer
- semi-barbarian
- septennial
- semi-precious
- semi-vowel
- semiotics
- semitic languages
- sempervirent
- send someone down
- sense
- sense of humour
- sensualize
- sensuous
- sentimentalize
- sequaciousness
- sequence
- sequent
- sequester
- serai
- serb
- sericulture
- sericulturist
- seriously
- serjeant at-arms
- serotypes
- serval
- serve a sentence
- serve out
- service fighters
- serviette
- serving
- servitor
- sesquipedal
- set a price on one's life
- set in hand
- set mind at rest
- set one's mind at rest
- set one's wit to
- set one's wit to anothers
- set someone apart
- set something up
- set up house
- setter
- settler
- setula
- seventhly
- sex appeal
- sex reversal
- sexagenarian
- sexagenary
- sextant
- sexual relation
- sexy
- shackle-bolt
- shade of difference
- shadow
- shagged
- shake
- shake out
- shake someone up, shake something up
- shake something
- shake with anger
- shaky
- shallow
- shaly
- shameless
- shammer
- shammy
- shapeless
- sharia
- shatter the silence
- shaving brush
- she-cat
- shedding lustre
- sheep
- sheep-dip
- sheep-shearing
- sheepdog
- sheet anchor
- shelf life
- shell with ridges spiralling
- shelter
- shepherd
- shepherdless
- sheriffalty
- shield