Depending on how you use the word 'small' in a sentence. Its synonyms that begin with S are: slight, secondary, small-minded, sordid, stingy, selfish.
small
Small things that start with the letter s:saltsandsawdustscrewseedsleetslugsnailsparkspeckstone
small
A synonym for cannabis that starts with S is sinsemilla.
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Shack or shanty. Those are words for house that begin with s.
The alternate name for pigs is swine
It is called a S Wave
Arid grasslands, or steppe(s).
* short, slight
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stone