first cousin-aunt-in-law 

1. The wife of one's grandparent's sibling's son.
2. The daughter of one's grandparent-in-law's sibling.

My first cousin-aunt-in-law is a good person.

first cousin-aunt-in-law by Elivaldeq November 24, 2019

co-cousin-aunt-in-law 

The daughter-in-law of one's grandparent-in-law's sibling.

My co-cousin-aunt-in-law is a good person.

co-cousin-aunt-in-law by Elivaldeq November 24, 2019

first co-cousin-aunt-in-law 

The daughter-in-law of one's grandparent-in-law's sibling.

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

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

step-co-aunt-in-law 

Spouse's steppibling's wife.

My step-co-aunt-in-law is a good person.

step-co-aunt-in-law by Wonbig October 13, 2021

half-co-aunt-in-law 

Spouse's half-pibling's wife.

half-co-aunt-in-law.

half-co-aunt-in-law by Simaduria July 27, 2024

aunt-by-marriage-in-law

Spouse's pibling's wife.

My aunt-by-marriage-in-law is a good person.

aunt-by-marriage-in-law by NSBC968755 February 25, 2023