Definify.com
Webster 1913 Edition
Paramour
1. 
A lover, of either sex; a wooer or a mistress (formerly in a good sense, now only in a bad one); one who takes the place, without possessing the rights, of a husband or wife; – used of a man or a woman. 
The seducer appeared with dauntless front, accompanied by his 
paramour 
Macaulay.
2. 
Love; gallantry. 
[Obs.] 
“For paramour and jollity.” Chaucer.
 Webster 1828 Edition
Paramour
PAR'AMOUR
,Noun.
 1.
  A lover; a wooer.2.
  A mistress.Definition 2025
paramour
paramour
English
Alternative forms
Adverb
paramour (not comparable)
-  (obsolete, of loving, etc.) Passionately, out of sexual desire; devotedly. [from 14thc.]
-  Chaucer
- For par amour I loved her first ere thou.
 
 -  1485, Sir Thomas Malory, chapter liij, in Le Morte Darthur, book X:
- Is this trouthe said Palomydes / Thenne shall we hastely here of sire Tristram / And as for to say that I loue la Beale Isoud peramours I dare make good that I doo / and that she hath my seruyse aboue alle other ladyes / and shalle haue the terme of my lyf
 
 
 -  Chaucer
 
Noun
paramour (plural paramours)
-  An illicit lover, either male or female.
-  (Can we date this quote?), Macaulay:
- The seducer appeared with dauntless front, accompanied by his paramour.
 
 -  2016 February 23, Robbie Collin, “Grimsby review: ' Sacha Baron Cohen's vital, venomous action movie'”, in The Daily Telegraph (London):
- The action scenes are deafening and punchily staged by director Louis Letterier (The Transporter), though I wish he’d set more time aside to spend with Nobby, his paramour Dawn (Rebel Wilson), their shaven-headed brood, and friends
 
 
 -  (Can we date this quote?), Macaulay:
 
Synonyms
Translations
illicit lover
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