WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
of illegal marriage to a second person while legally married to a first
Word Usage
"'Hadn't you best leave well alone?' said I; 'for I declare till this moment I hadn't dreamed that another such woman as yourself existed in the world, and it gives me a kind of bigamous feeling which I can't say I find altogether unpleasant.'"