co-uncle 

Your brother's or sister's brother-in-law, or your niece's or nephew's other uncle(s) that aren't your brothers.

Jonathon and I aren't blood related, as his sister married my brother, but we are co-uncles to Jack and Caroline.

co-uncle by OneEyedWilvis January 20, 2009

co-uncle-in-law 

Spouse's aunt's husband.

My co-uncle-in-law is a good person.

co-uncle-in-law by Gerald128 April 6, 2021

co-uncle-in-law 

Spouse's pibling's husband.

My co-uncle-in-law is a good person.

co-uncle-in-law by Wonbig October 13, 2021

co-uncle-in-law 

Spouse's pibling's husband.

co-uncle-in-law.

co-uncle-in-law by Simaduria July 26, 2024

half-co-uncle-in-law 

Spouse's half-pibling's husband.

My half-co-uncle-in-law is a good person.

half-co-uncle-in-law by Wonbig October 13, 2021

step-co-uncle-in-law 

Spouse's steppibling's husband.

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

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

half-co-uncle-in-law 

Spouse's half-pibling's husband.

half-co-uncle-in-law.

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