red-flag

1 of 2

verb

ˈred-ˈflag 

red-flagged; red-flagging; red-flags

transitive verb

: to identify or draw attention to (a problem or issue to be dealt with)

Those who voice the most displeasure in their marriage, are more likely to complain about their partner's weight, Newport adds, which may help counselors red-flag weakening relationships before it's too late.

—Matthew J. Cravatta

Drug testing, detailed questions about previous employment history, and criminal-record checks go a long way toward red-flagging risks.

—Anne Fisher

We met, we got along great, and I [Spike Lee] told her, "Not only do I want you to work with the actors, but I want you to look at this script. I am a man, and I know there's going to be stuff in there that's strictly from a male viewpoint—I want you to red-flag that stuff."

—Anne Stockwell

red flag

2 of 2

noun

plural red flags

: a warning signal or sign

A high body-mass index is a red flag in general to clinicians. But sudden, unexplained weight loss can be even more worrisome.

—Melinda Beck

: something that indicates or draws attention to a problem, danger, or irregularity

Interested large investors often send in their own CPAs to conduct complete audits to verify statements or to spot red flags, such as excessively old inventory or uncollectible accounts receivable.

—Inc.

Whether you're dating a potential gold digger or are surrounded by friends who are constantly asking for handouts, you'll want to protect your money from those kinds of drains. Watch out for red flags such as dishonesty, secrecy around money matters and requests to co-sign a loan.

—Kimberly Palmer

Though Kearse did not take legal possession of the car until Jan. 4, 1999, after his eligibility had expired, the purchase raised red flags. [=aroused suspicions of wrongdoing]

—L. Jon Wertheim

see also red flag law

Synonyms

Noun

• caution
• red light
• tip-off
• tocsin
• wake-up call
• warning

Examples of red-flag in a Sentence

Noun

Gaps in your employment history are red flags to employers.

the résumé she accidentally left on the office printer was a red flag that she was planning to quit

Recent Examples on the Web

Noun

The lawsuit noted that several DOE employees have tried to block DOGE's access by raising red flags up the command chain, but DOE leadership directly instructed lower-level employees to grant DOGE access, the same source alleged. —Ashley Belanger, Ars Technica, 7 Feb. 2025

Another red flag was PayPal’s speculation around acquiring social media platform Pinterest (PINS) . —Jeff Nash, CNBC, 4 Feb. 2025

Another aspect of Roblox that has raised red flags in the past is the fact that, although most games are free to play, users can make purchases within games, leading to kids accidentally charging sometimes thousands of dollars to the credit card connected with the account. —Elisabeth Sherman, Parents, 4 Feb. 2025

Erik Jones and Ty Dillon make contact at the front of the field, sending some cars spinning and bringing us under caution — technically a red flag, as caution laps don’t count. —Shane Connuck, Charlotte Observer, 3 Feb. 2025

Word History

First Known Use

Verb

1962, in the meaning defined above

Noun

1748, in the meaning defined above

Kids Definition

red-flag

1 of 2 verb

: to identify or draw attention to (a problem or issue)

red flag

2 of 2 noun

: a warning signal or sign