red flag

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

That was a huge red flag for me that we had to dig deeper.

From Los Angeles Times • May 20, 2026

As for the second red flag, weak data points, Allen noted that previous energy shocks have been accompanied by evidence such as the sharp and immediate rise in unemployment in 1973.

From MarketWatch • May 19, 2026

"We see the official holding the red flag which means the track was not safe but we also see that the train did not stop or slow down, causing the crash," Siam said.

From Barron's • May 18, 2026

Another major red flag about the website, advocates say, is that the website directs people to unregulated pregnancy clinics.

From Salon • May 17, 2026

A red flag warning meant warm temperatures, dry conditions, and strong winds—which all added up to the possibility of a forest fire.

From "Two Degrees" by Alan Gratz