To commit bigamy; to marry a second person while still being legally married to another.
From 'bigamy' plus the verb-forming suffix '-ize'. This creates a verb meaning to 'act in a bigamous manner' or 'commit bigamy'.
While the noun 'bigamy' is common, the verb 'bigamize' is quite rare—people tend to say 'commit bigamy' instead, showing how language sometimes creates verbs that don't stick around.
The practice and its legal treatment reflected asymmetric gender power: men could more easily conceal or normalize plural partnerships; women had fewer legal remedies and social recourse.
Use the verb neutrally, but situate discussion within gendered historical or legal contexts where relevant.
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