Meanings
- idiomaticBeing or made privy to, a participant in, involved in, included in, or informed of (usually something private or secret, especially a plan or plot).
She was in on the surprise from the beginning.
2 more examples
He didn't hold the gun, but he got in on the robbery after he overheard some of us talking.
(A foolproof method of producing an amusingly annoyed response from the distinguished experts? Just mention the word “ghosts.”) Whether they’re in on the joke or not doesn’t matter all that much.
2025 January 3, Christina Izzo, “Cunk On Life is brilliantly funny (and depressingly timely)”, in AV Club, archived from the original on 04 Aug 2025Synonyms: party to
Synonyms & antonyms
prepositionBeing or made privy to, a participant in, involved in, included in, or informed of (usually something private or secret, especially a plan or plot).
Origin
Extracted from let in on.
Full word history & related roots →Translations
Arabic جُزْءً مِن
- جُزْءً مِن (juzʔan min)Part of or privy to
Chinese Mandarin （私下）知情
- （私下）知情Part of or privy to
Norwegian med på, gjøre kjent med
- med påPart of or privy to
- gjøre kjent medPart of or privy to
Polish wtajemniczony
- wtajemniczonyPart of or privy to
Spanish parte de
- parte dePart of or privy to
Cite this entry
in on. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/in%20on
“in on.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/in%20on. Accessed November 4, 2026.
WatkinsX Dictionary, s.v. “in on,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/in%20on.
Source: in on on Wiktionary, CC BY-SA 4.0.