What does junior mean in greek?

There isn't a single Greek word that directly translates to "junior" in the sense of a younger person with the same name as someone else. The concept of using "Junior" as a suffix to a name is a Western naming convention, not a Greek one.

To express the idea of "junior" in Greek, you would need to use descriptive phrasing, such as:

* ο νεότερος (o neóteros): This means "the younger one." You could use this with a person's name, e.g., "Γιώργος ο νεότερος" (Giorgos o neóteros) - George the younger.

* ο μικρότερος (o mikroteros): This means "the smaller/younger one," emphasizing size as well as age.

* You could also use a phrase clarifying the relationship, such as: ο γιος του Γιώργου (o yios tou Giorgou): "George's son," if the younger person is the son of the older person with the same name.

Therefore, there's no direct equivalent but several ways to convey the meaning depending on the context.