first cousin-nephew 

First cousin's son.

My first cousin-nephew is a good boy.

first cousin-nephew by Mr. Jacov November 23, 2019

half-first cousin-nephew

Half-first cousin's son.

My half-first cousin-nephew is a good boy.

half-first cousin-nephew by Hgcloziw November 23, 2019

sesqui-first cousin-nephew 

Sesqui-first cousin’s son.

My sesqui-first cousin-nephew is a good boy.

sesqui-first cousin-nephew by Hgcloziw November 23, 2019

double-first cousin-nephew 

Son of their maternal first cousin with the paternal first cousin or double-first cousin’s son.

My double-first cousin-nephew is a good person.

double-first cousin-nephew by Hgcloziw November 23, 2019

first great-cousin-nephew 

First cousin's grandson.

My first great-cousin-nephew is a good boy.

first great-cousin-nephew by Hgcloziw November 23, 2019

first co-cousin-nephew-in-law 

The grandson-in-law of one's parent-in-law's sibling.

My first co-cousin-nephew-in-law is a good person.

first co-cousin-nephew-in-law by Elivaldeq November 24, 2019

first step-cousin-nephew 

1. The granddaughter of one's parent's stepsibling.
2. The stepgranddaughter of one's parent's sibling.
3. The granddaughter of one's stepparent's sibling.

My first step-cousin-nephew is a good person.

first step-cousin-nephew by Elivaldeq November 24, 2019