To draw attention to something, especially a problem, issue, or concern, so that it can be dealt with.
To tell someone about a problem or important thing so they know about it.
One main meaning — here's how to use it.
To draw someone's attention to a problem, issue, or important piece of information.
"I wanted to flag up a few concerns before we proceed with the project."
Ministers have flagged up the need for additional funding.
— BBC News, political reporting, widely used phrasing
Raising a flag to signal — 'up' implies raising the flag to make it visible.
To tell someone about a problem or important thing so they know about it.
Very common in British English, especially in professional, journalistic, and governmental contexts. Less common in American English, where 'flag' alone or 'point out' is preferred. Often used in workplace communication.
Natural word combinations native speakers use most often.
The five tense forms you'll use most often.
Listen to native speakers using "flag up" in real YouTube videos — click a clip to watch it on Looplines.
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