What is another word for wave a red flag?
Pronunciation: [wˈe͡ɪv ɐ ɹˈɛd flˈaɡ] (IPA) 
The expression "wave a red flag" is used to refer to a situation where someone intentionally draws attention to a potential problem or issue. There are a variety of synonyms for this phrase, including "sound the alarm," "raise a warning flag," "fly a red banner," "sound the warning bell," "alert the authorities," or simply "warn." All of these phrases convey the sense of signaling that something is amiss and attention needs to be paid, whether to a particular behavior, situation, or potential danger. Understanding the nuances and differences between these synonyms can help you choose the best expression for your particular context.
