Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun paramour

2 senses of paramour

Sense 1
fancy man, paramour -- (a woman's lover)
       => lover -- (a significant other to whom you are not related by marriage)

Sense 2
concubine, courtesan, doxy, paramour -- (a woman who cohabits with an important man)
       => mistress, kept woman, fancy woman -- (an adulterous woman; a woman who has an ongoing extramarital sexual relationship with a man)