endimanché

dressed up, in one's Sunday best

ɑ̃ . d i . m ɑ̃ . ʃ e → endimancher
en put into or cause to become + dimanch Sunday + é Past participle
adjective Rare #51,149
dressed up, in one's Sunday best Often suggests dressing more formally than usual.
FR: Il est endimanché pour le dîner.
EN: He's dressed up for dinner.

Il est endimanché.

He is dressed up.

Où tu vas tout endimanché ?

Where are you going, all dressed up?

— Quand passent les cigognes (1957)

Tom était endimanché.

Tom was in his Sunday best.

Pourquoi es-tu tout endimanché ?

Why are you all dressed up?