since when

idiom
UK: /ˌsɪns ˈwen/
US: /ˌsɪns ˈwen/

  1. An expression of disbelief or surprise at a new rule or behavior.

    1. I have to do chores now? Since when? [ ] [ ]
    2. They're serving cake for breakfast? Since when did that become acceptable? [ ] [ ]

  2. Used to question the justification or validity of something recent.

    1. He's the boss all of a sudden? Since when? [ ] [ ]
    2. You started liking jazz since when you met that musician at the party. [ ] [ ]
since when interjection

  1. Indicates surprise or skepticism about a change or new claim.

    1. Since when are you interested in sports? [ ] [ ]
    2. Since when is lying considered acceptable in this family, I wonder. [ ] [ ]

Frequently Asked Questions

The word "since when" in English means: An expression of disbelief or surprise at a new rule or behavior., Used to question the justification or validity of something recent..

The phonetic transcription of "since when" is /ˌsɪns ˈwen/ in British English and /ˌsɪns ˈwen/ in American English. Click the 🔊 button to hear both pronunciations.

Example usage of "since when": "I have to do chores now? Since when?". More examples on the page.