big ‧ a ‧ my /ˈbɪɡəmi/ BrE AmE noun [uncountable]
[ Date: 1200-1300 ; Language: Medieval Latin ; Origin: bigamia , from Latin bi- ( ⇨ ↑ bi- ) + Late Latin -gamia ( -GAMY ) ]
the crime of being married to two people at the same time ⇨ monogamy , polygamy
—bigamist noun [countable]
—bigamous adjective