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2. bigamy
Bigamy is defined as having one wife too many.

See monogamy.
He practiced bigamy. He had one wife too many.
1. Bigamy
/noun/ -- The practice of fruadulently marrying more than one spouse
John married Jane without divorcing Mary and is thus guilty of the crime of Bigamy
3. bigamy
A kind of awkward word for your last name to derive from if you're a girl.
Jacklyn: Hello! I'm Jacklyn Bigam!
Random person: Bigam...? As in...?
Jacklyn: Bigamy. Yes. Shut up now.
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