Part IIIa SupplementMatrimonyQuestion 60
Uxoricide as Impediment
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Uxoricide is wife-murder. This most horrible crime never has justification, even if a husband discovers his wife inthe very act of committing adultery.
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A man who kills his wife with the moral or physicalconcurrence of another woman whom he intends to marry, incurs adiriment impediment (of crime) which makes the proposed marriage impossible. The same is true of a wife who plots and acts with an unlawful lover to cause her husband’s death.
Full Summa Text · III Suppl., Q. 60
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