When your spouse claims to not be having an affair. However, a wedding invitation is delivered to your home addressed to your spouse and some other random person's name on it. Not my name, but my address! What the hell?
My spouse is an Address Adultress as a wedding invitation was delivered to our home. My spouse's name was on it and some random person's name too. Not my name Buddy?
Some consider adultery as a potentially dishonest sexual act, and use verbs such as commit. ie She committed adultery. Some consider adultery in the same sense as a greeting or a handshake, and simply behaving like an adult. Hence the word ADULTery.