sirvieron, pret. of servir.
sirvo, pres. of servir.
sistema, m., system.
sitio, m., place.
situación, f., situation.
sobra, f., excess, surplus; de —, plenty, more than enough.
sobrar, to remain, have more than is necessary.
sobre, on, upon, above.
sobremesa, f., dessert.
sobriedad, f., sobriety.