tío

1. (masculine) uncle
2. (colloquial, masculine) unknown male person, dude, guy
3. (masculine) mister (title conferred on an adult male)

Pronounced as (IPA)

/ˈtiʊ/

Etymology

Cognate with Portuguese: tio

In summary

From Old Galician-Portuguese tio, from Late Latin thīum, from Ancient Greek θεῖος (theîos). Compare Portuguese tio.