Trusband 

Three men who are all married to each other, or part of a trarriage.

Sir, we carry bride-groom, groom-groom, and bride-bride wedding cakes, but we simply do not carry groom-groom-groom cakes. You and your trusbands will have to shop somewhere else.

Trusband by El Jack X August 5, 2011

Thrusband 

A third husband.

This looks cool lets go tell our thrusband about this!

Thrusband by MoonPython January 6, 2021

Thusband 

A spouse who goes by gender neutral pronouns, but is also the dominate person in the relationship.

"Yeah, so my Thusband asked me to make them a sandwich for lunch."

Thusband by Lurkershenanigans February 24, 2023