paramour

[ par-uh-moo r ]
/ ˈpær əˌmʊər /

noun

an illicit lover, especially of a married person.
any lover.

Origin of paramour

1250–1300; Middle English, from the phrase par amour by or through love < Old French
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for paramour

British Dictionary definitions for paramour

paramour

/ (ˈpærəˌmʊə) /

noun

mainly derogatory a lover, esp an adulterous woman
an archaic word for beloved (def. 2)

Word Origin for paramour

C13: from Old French, literally: through love
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012