Bugs
Visa
bias
said is a 4 letter word beginning with s and ending with d
Some four letter words beginning with P and ending with S:PadsPalsPansPapsParsPassPatsPawsPaysPeasPecsPegsPensPepsPetsPewsPicsPiesPigsPinsPipsPitsPlusPodsPolsPomsPopsPotsProsPubsPudsPugsPunsPupsPuts
Stop
scow.
STIX !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Could be a four letter word that starts with s and ends with x
mandates
what 5 letter word begins with s- a living thing-second 5 letter word ending in d
Bellybuttons would be the longest word I can think of beginning with a 'b' and ending in an 's'.
Some four letter words starting with S and ending with F are:selfserfsurf
scar, sear, slur, soar, spar, spur, star, stir