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An act of adultery was then necessary, and as this good and chivalrous husband was also an exceptionally moral man, he took his sister to an hotel, and the divorce was granted on this: they, of course, signing their names in the hotel register as Mr. and Mrs. X. Case 3._--_In this case the action of the parties is reversed.— Women's Wild Oats Essays on the Re-fixing of Moral Standards
Trouble arose from the necessary act of adultery, as it was against the principles of the husband even to appear to commit it.— Women's Wild Oats Essays on the Re-fixing of Moral Standards
Often weariness and despair drive her to the brief intoxication of the anodyne of adultery, a further crime which is only the natural consequence of the first But it must not be thought that women are the only sexual criminals.— The Mummy and Miss Nitocris A Phantasy of the Fourth Dimension
Three years later the wretched woman was accused of adultery, and being put to the torture confessed her crime and was drowned in a sack, while her paramour was beheaded.— Lippincott's Magazine of Popular Literature and Science, Volume 22. July, 1878.
The permission therefore to re-marry is permission to live in adultery, and that permission is, of its very nature, null and void.— Explanation of Catholic Morals A Concise, Reasoned, and Popular Exposition of Catholic Morals

American Heritage Dictionary (1)
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