An eight letter word that starts with S and ends with T: satiristshortestsmallestsmarteststagnantstalwartstiffeststridentsubtract
squawkstreak
aunts
scallop
snake
A 13-letter word that starts with "s" and ends with "s" is "schoolteachers."
Sandman (starts with S ends with N - 7 letter word)
An eight letter word that starts with S and ends with T: satiristshortestsmallestsmarteststagnantstalwartstiffeststridentsubtract
Semi
Scorpions
Sansansiding.
gladiolus
Scissors is an 8 letter word. It begins and ends with S.
seamanship
squawkstreak
Santana
molasses