tristement

sadly, notoriously, infamously

t ʁ i s . t ə . m ɑ̃
triste sad, unhappy + ment Forms adverbs meaning “-ly” and nouns denoting an action or result.
adverb Rare #49,411
sadly In the expression « tristement célèbre », it means “notoriously” or “infamously.”
FR: Elle sourit tristement.
EN: She smiled sadly.
notoriously, infamously Used in the expression « tristement célèbre » (literally, “sadly famous”).
FR: Ce lieu est tristement célèbre.
EN: This place is notorious.

La petite sirène gémit et regarda tristement sa queue de poisson.

The little mermaid moaned and looked sadly at her fishtail.

Il fut arrêté et exilé aux Andamans, îles tristement célèbres.

He was arrested and exiled to the Andamans, islands of ill repute.

— Gangs of Wasseypur : 1ère partie (2012)

Elle me regarda tristement.

She looked at me sadly.

Il me regardera tristement et dira que c'est sa faute.

He’ll look at me sadly and say that it’s his fault.

— Les Fraises sauvages (1957)