Star, slap, slim, slip, slam, salt, sand, sing, there are really many options
sail
sand
The word is "souq."
bnmn
saga
A 13-letter word that starts with "s" and ends with "s" is "schoolteachers."
Ants
spay, stay, slay,
soux
· umps · urns · uses
Stop is a word of warning. It starts with the letter s. Shut up also can be a word of warning.
Suet
STIX !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Could be a four letter word that starts with s and ends with x