belles let·​tres | \ bel-ˈletrᵊ How to pronounce belles lettres (audio) \

Definition of belles lettres

: literature that is an end in itself and not merely informative specifically : light, entertaining, and often sophisticated literature

First Known Use of belles lettres

1665, in the meaning defined above

History and Etymology for belles lettres

French, literally, fine letters

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