a red flag

red flag

A sign or signal indicating potential, incipient, or imminent danger or trouble. There are a couple of red flags you need to look out for to make sure your company stays in the black. Well, it definitely raised a red flag when he got so angry at me over such a minor thing, but I never thought he could be so unreasonable to live with!

a red flag

mainly AMERICAN

You call something that gives a warning of a bad or dangerous situation or event a a red flag. These are devices that are necessary components of nuclear weapons, and clearly that has raised a red flag in the minds of a lot of people. Cholesterol was the red flag that alerted millions of Americans to the fact that diet really does matter. Compare with a red flag before a bull.

词组	a red flag
释义	a red flag red flag A sign or signal indicating potential, incipient, or imminent danger or trouble. There are a couple of red flags you need to look out for to make sure your company stays in the black. Well, it definitely raised a red flag when he got so angry at me over such a minor thing, but I never thought he could be so unreasonable to live with! See also: flag, red Farlex Dictionary of Idioms. a red flag mainly AMERICAN You call something that gives a warning of a bad or dangerous situation or event a a red flag. These are devices that are necessary components of nuclear weapons, and clearly that has raised a red flag in the minds of a lot of people. Cholesterol was the red flag that alerted millions of Americans to the fact that diet really does matter. Compare with a red flag before a bull. See also: flag, red Collins COBUILD Idioms Dictionary, 3rd ed. See also: red flag raise a red flag on red alert pull (someone or something) out of the fire pull out of the fire pull (someone's) bacon out of the fire a/the sword of Damocles hangs over (one's) head Damocles Damocles' sword hangs over (one) Damocles' sword hangs over (one's) head References in periodicals archive That's raising a red flag among some elected officials and business leaders, who wonder why so many government dollars are going toward a development that will in all likelihood bring no new major tenants to downtown St. LWIB: Cardinals Ballpark Village Updates, A's Cards Go with Dynamic Pricing, Plus Tidbits For Berns, as his other writings make clear, it extends to censorship of "immoral" materials (which is certainly a red flag). McVeigh to Macbeth A yellow or white flag is attached to one end of the shaft and a red flag to the other. A Multi-Purpose Flag System
随便看	a tinker's damn at/in one fell swoop at/in one go at intervals at/in the back of your mind at/in/to the forefront a tip of the hat at issue a tissue of lies at it at it again a tit bit nipply at its best at knifepoint at large at last at latter Lammas at least at least so many at leisure at length at liberty at lightning speed at loggerheads at loggerheads over (something)