What is another word for red line?
Pronunciation: [ɹˈɛd lˈa͡ɪn] (IPA) 
Red line is a phrase that has multiple synonyms, which means a definite limit beyond which an activity or behavior becomes unacceptable. Some of the various synonyms for the term "red line" include boundary, limit, threshold, cutoff point, point of no return, danger zone, and the like. In international relations, the term red line is often used to indicate that certain activities will not be tolerated and may trigger severe consequences if crossed. Similarly, in businesses, a red line may indicate the maximum limit of an acceptable level of risk. Therefore, understanding the context in which the term is being used is vital to determine the appropriate synonym.
