This is the 4181st most frequent Portuguese word.
sávio
"Sávio" is a Portuguese name meaning "wise" or "savvy."
Here, 'Sávio' is used as a proper noun, referring specifically to someone's name.
O nome dele é Sávio, e ele gosta de jogar futebol.
His name is Sávio, and he likes to play soccer.
In this sentence, 'sávio' is used as an adjective meaning 'wise' or 'sensible' to describe the character.
Eu acho o personagem principal deste livro muito sávio.
I think the main character of this book is very wise.
Typically, 'sábio' is the correct spelling for 'wise' in this sense; ensure to use the standard spelling for clarity.