`“saudade” (or sodade in Cape Verdean, a dialect of Creole). It translates directly in English as nostalgia, but to a native speaker it has a much richer meaning. It is the deep emotional state of nostalgic longing for an absent something or someone that one loves. Even deeper still, it describes the feeling towards people and things whose whereabouts are unknown…it is the love that remains in the space of absence.
A beautiful word that means so much: "Saudade is a Portuguese and Galician word that has no direct translation in English. It describes a deep emotional state of nostalgic or deeply melancholic longing for an absent something or someone that one loves." (http://en.wikipedia.org/wiki/Saudade)