"Sweetheart" is most often rendered as "Chérie" (fem.) and "chéri" (masc.) in French.
Cherie
The Latin word for sweetheart is puella. The word sweetheart in Spanish is novio, in Italian it is Tesoro, and in French it is amoureux.
koo'ooh ee-po (sweetheart; boy/girlfriend, etc)
Cheri/e
Mon chéri.
In Cajun French, you can say "cher(e)" or "mon cher" to mean sweetheart.
you can say two words: édesem [eːdɛʃɛm] drágám [draːɡaːm]
amoureux
cheri occupés.
Merci chérie
The word "pronounce" in French is "prononcer."