Definition of affaire in US English:

affaire

(also affaire de cœur, affaire du cœur)

noun

  • A love affair.

    • ‘In Libya, people put ice in their drinks, had houseboys and conducted affaires.’
    • ‘Well, at least I keep my private affaires to myself mostly.’
    • ‘I tried to act utterly cool and nonplussed by the whole affaire de Madamoiselle A.’
    relationship, love affair, romance, fling, flirtation, dalliance, liaison, entanglement, romantic entanglement, involvement, attachment, affair of the heart, intrigue
    View synonyms

Origin

Early 19th century: French, literally ‘affair (of the heart)’.

Pronunciation

affaire

/əˈfer/