Comparative law notes
The word "bígamo" can be both an adjective and a noun in Portuguese.
There are multiple definitions - click on the translation that matches your context.
bígamo
substantivo
full
bigamist
noun
Definitions of bigamist
someone who is 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
He admitted being a bigamist after pictures of his second family were posted online.