Which is correct?
Because time is limited, please hold your questions ____ after the robot demonstration.
Although till is often considered to be an abbreviation of until — and is frequently thought to be incorrect for its extra letter l and lack of apostrophe — it actually predates the longer word. People who want to use a less formal variant sometimes use ’til, but that’s not actually a word. Because we’ve got two perfectly good, equally correct words that mean the same thing, we don’t need to incorporate another into the language. (Merriam-Webster, I’m talking to you!)
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