/ˈbɪɡəmɪst/ – Noun
Definition: kẻ lấy hai vợ, kẻ lấy hai chồng, kẻ song hôn.
A more thorough explanation: A bigamist is a person who is legally married to two different individuals at the same time, which is a criminal offense in many jurisdictions.
Example: The defendant was charged with being a bigamist for marrying a second spouse while still legally married to their first spouse.