good night

Phrase

colloquial dated

A farewell said in the evening or before going to sleep. / (colloquial, dated) Expressing incredulity.

Japanese Meaning

夕方や就寝前の別れの挨拶、つまり「おやすみなさい」や「良い夜を」といった意味合い。 / （口語的・古風な表現として）、驚きや信じがたい様子を表す際に用いられる意味。

Before leaving the party, she hugged everyone and whispered, 'good night'.

パーティーを出る前に、彼女は皆を抱きしめて「おやすみなさい」とささやいた。

Sense（1）

A farewell said in the evening or before going to sleep.

Sense（2）

(colloquial, dated) Expressing incredulity.

[…] peculiarities of your law always interest me. What is 'legitim'?"

"Oh! Good-night!" I said derisively.