in on
idiom
: knowledgeable about (something) or involved in (something)
They were all in on the scheme.
I let them in on our little secret.
Examples of in on in a Sentence
Recent Examples on the Web
Check back in on Deadline shortly for more reaction.
—
Andreas Wiseman, Deadline, 5 Dec. 2025
Let’s cut workers in on the deal.
—Associate News Editor, MSNBC Newsweek, 5 Dec. 2025
The New York Giants quarterback, 31, joined in on a viral TikTok trend where people share an incident from their youth and what to do in that situation.
—Skyler Caruso, PEOPLE, 4 Dec. 2025
So grab your family and friends and join in on the holiday fun with these celebrations.
—Ella Gonzales, Fort Worth Star-Telegram, 4 Dec. 2025
See All Example Sentences for in on
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Andreas Wiseman, Deadline, 5 Dec. 2025
Let’s cut workers in on the deal.
—Associate News Editor, MSNBC Newsweek, 5 Dec. 2025
The New York Giants quarterback, 31, joined in on a viral TikTok trend where people share an incident from their youth and what to do in that situation.
—Skyler Caruso, PEOPLE, 4 Dec. 2025
So grab your family and friends and join in on the holiday fun with these celebrations.
—Ella Gonzales, Fort Worth Star-Telegram, 4 Dec. 2025
See All Example Sentences for in on
Cite this Entry
“In on.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/in%20on. Accessed 9 Dec. 2025.
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