- Senna obtusifolia
- St John's wort
- sundial lupine
- sea lavender
- sweet vetch
- subset
- suffragette
- swine flu
- signor
- signior
- signore
- Senhor
- strapper
- stone drill
- Sheraton
- skimp over
- skate over
- slur over
- stolen property
- spoil
- spoilation
- shover
- stroller
- strolling
- squinter
- spousal equivalent
- squint_eye
- sneezer
- spurner
- stigmatist
- socialiser
- sloucher
- stifler
- significant other
- smotherer
- survivalist
- second_rater
- spitter
- socializer
- substance abuser
- skin and bones
- sniffler
- snuffler
- straight person
- sniveler
- sniffer
- stooper
- shitter
- seeder
- sprawler