PUTAIN

also PEWTENE, PUTAIGNE, PUTAINE, PUTANE, PUTAYN, PUTEY

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from Old French putain:—late popular Latin *puttānem, accusative of putta:—L. pūtida stinking, disgusting

a 1300 - see below from E-NED

From: Select English Works of John Wyclif
Edited from Original MSS. by Thomas Arnold
Volume II. 1871
Sermons on the Ferial Gospels and Sunday Epistles. Treaties.
P. 27