Definition
to fill (somebody) in (on something): to tell (somebody) the details (about something); to inform, to advise, to notify (somebody about something)
I've already been filled in on what happened while I was gone, Mark just told me all the details.
- "Susie : Polly filled me in on the details."
- "So Scott, let me just fill you in."
- "Just a quick message to fill you in on our first focus group this afternoon."
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