/bɪˈɡæməs/ – Adjective
Definition: Kết hôn với nhiều người cùng một lúc.
A more thorough explanation: related to the fact of being married to two or more people at the same time, especially in a society that practices monogamy (=being married to only one person at a time) where this is illegal
Example: He alleged in divorce papers that his union with his wife, Lolita, was a “bigamous marriage”.