1965, Richard Seaver and Austryn Wainhouse, translators, Justine, Philosophy in the Bedroom, and Other Writings, translation of original by Marquis de Sade, page 1184:
No sooner does he hear these words than he decunts, takes hold of the poor child in his two wicked hands, and hurls her, naked, into the roaring fire
1995, Guillaume Apollinaire, Flesh Unlimited: Two Erotic Novellas, page 26:
[...]Quit Calculine's quim until he had discharged a total of three times and she herself ten.
When he had decunted, both noticed in astonishment that Alexine had disappeared. She soon returned with pharmaceutical[...]
1999, P Sugden, “Story: Kathy's Party”, in alt.sex.stories, Usenet, retrieved 06/09/16:
Frank finally came with a grunt, depositing his sperm deep in Kathy's cunt. When he had decunted, Neville got up and walked around to the foot of the bed [...]