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since when

idiom

used to show that one is surprised and often angry, annoyed, or doubtful about what someone has said or done
"I'm a vegetarian." "Since when?"
"You told me to do it." "Since when did you start listening to me?"
Since when is it okay to cheat?

Examples of since when in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
But since when has Payton shown any interest in running the ball after the opening series of each half? Troy Renck, Denver Post, 10 Nov. 2025 But since when was Crunch Berries an aphrodisiac? Breanne L. Heldman, PEOPLE, 2 Oct. 2025 But since when did the U.S. place a premium on building alliances with the ideological cousins of al-Qaeda and ISIS? Josh Hammer, MSNBC Newsweek, 15 Aug. 2025 Plus, since when does any company tell the whole unfiltered truth without a little hyperbole? New Atlas, 17 July 2025 Sure, Trump joked about using the plane himself – but since when does a Trump joke NOT cause a complete public meltdown? Rachel Marsden, Hartford Courant, 23 May 2025 Dolton has changed tremendously since when the future pope lived there playing priest. Michael Loria, USA Today, 19 May 2025 From the crew mess, Jason overhears their banter and asks since when Marina is second stew. Rafaela Bassili, Vulture, 13 May 2025 But Jordan, since when is Kyle Busch still an upper-echelon talent? Jeff Gluck, The Athletic, 15 Feb. 2025

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Cite this Entry

“Since when.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/since%20when. Accessed 1 Dec. 2025.

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