- stay_at_home
- stoic
- sheikhdom
- sightseer
- streets ahead of
- sex cell
- samuel wiesenthal
- student nurse
- sourly
- sharp as a tack
- sharp ring
- sharp (facial) features
- sharp eyed
- schoolmate
- spinster
- spinoza
- syllogistic
- Sivapithecus
- Sinanthropus
- Salvelinus alpinus
- soft coal
- steam coal
- soda_lime glass
- second estate
- substring
- stratum opticum
- sociobiologic
- spiritise
- sunburn
- sunburned
- sparrowhawk
- sparse matrix
- sparse array
- superscript
- supersaturated solution
- stenographic
- stenograph
- subscript
- subscript character
- subscript list
- subscript variable
- star turn
- stapling operation
- star board
- small loan company
- subtle
- street
- soc
- species
- square number
