English

Adverb

since when ‎(not comparable)

1. (colloquial, rhetorical question, sarcastic) From what time.

   Since when do I need your permission?‎

   • 1915, Emerson Hough, The Purchase Price, chapterI:

     “[…] We are engaged in a great work, a treatise on our river fortifications, perhaps ? But since when did army officers afford the luxury of amanuenses in this simple republic ? Does your Vehmgerichte pay such extraordinary expenses ? […]”

2. (colloquial, rhetorical question, sarcastic) (as an interrogative interjection) Used to indicate doubt as to the veracity of a statement.

   The moon is made of green cheese. Since when?‎

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