Pronunciation: /sɪt ɪn ɒn/
verb to attend or observe a meeting or event without actively participating
A1 I like to sit in on my sister's piano lessons.
A2 Students are allowed to sit in on lectures even if they are not officially enrolled in the class.
B1 As a journalist, I often sit in on important meetings to gather information for my articles.
B2 The CEO invited me to sit in on the board meeting to provide my input on the new project.
C1 The judge allowed the jury to sit in on the trial to observe the proceedings.
C2 I had the opportunity to sit in on a top-secret government briefing during my time working in intelligence.
formal I was invited to sit in on the board meeting to observe the decision-making process.
informal Hey, do you mind if I sit in on your study group later?
slang I heard there's a cool party happening tonight, can I sit in on it?
figurative As a fly on the wall, I was able to sit in on their private conversation and learn some interesting information.
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