What do you call your mom's uncle's son?

Answer 1

Your mom and her uncle's son are cousins, of the same generation, first cousins.

Your mom's uncle's son is your first cousin, once removed (by one generation). If he has children, they will be your second cousins.

(Children of first cousins are second cousins to each other.)

Answer 2

Your uncle's sons and daughters are your first cousins.

Answer 3

First cousin once removed

Answer 4

Cousin. First cousin to be exact.

Answer 5

2nd cousin more accurately.

Answer 6

cousin