They are your cousin. Nothing changes sharing a common ancestor.
cousin
Such a person is your best friend.
The English language does not have a widely accepted relationship term for the husband of your first cousin. That person is not considered to be related to you. If you must describe him other than by name, you might call him your "cousin's husband." Some people use the recently invented term "cousin-in-law."
They call you their cousin also!
you call your mums cousin a 2nd cousin, because your mums cousin is her 1st cousin, wich makes your mums cousin your 2nd cousin.
The brother of your wife's cousin is also her cousin. You can call either of them "my wife's cousin." You are not related to them.
I guess you could call her cousin-in-law :)
Do what you want.
The word cousin is a common noun, the word Scott is a proper noun. When used to name the person, Cousin Scott, you can use cousin as a proper noun.
That would probably be your cousin-in-law.
Your wife's first cousin, once removed. The English language has no shorter term or special name for that person.
Why don't ya call him by your cousin name +jr.