if my cousin has a baby what am i to that baby

You are that baby’s first cousin once removed.

What that means

• You and your cousin are first cousins because you share a set of grandparents.

• Your cousin’s baby is one generation below you, so the “once removed” just means “one generation apart.”

So, in everyday life, you might just say “my cousin’s baby,” but the proper family-tree term is first cousin once removed.

In short: if my cousin has a baby what am I to that baby?
You’re their first cousin once removed.

TL;DR: Your cousin’s baby is not your niece/nephew; they are your first cousin once removed.

Information gathered from public forums or data available on the internet and portrayed here.