#sí# himself, herself, itself, etc.; #por —# in itself
#siempre# always; #para —# forever; #— que# whenever
#siete# seven
#siguiente# following
#silla# chair
#sillón# m. large chair, armchair
#sinceridad# sincerity
#singular# strange
#Sion# Zion, Jerusalem
#siquiera# even