#sin#, without; #—— que#, without.
#sino#, but, except; #no … ——#, only; #—— que#, but.
#sinvergüenza#, adj. and n. shameless (person).
#siquiera#, at least; #ni ——#, not even.
#sistema#, m. system.
#sitio#, m. spot.
#situación#, f. situation, state of things.
#so#, under.
#soberano, -a#, sovereign.
#sobrar#, to be in excess; #le sobra un pariente#, he has one relative more than he wishes.