When it comes to discussing issues that can be polarizing, sensitive or divisive, there are various synonyms for the term "controversial issue". Some words that can be used instead of "controversial issue" include "contentious topic", "debated matter", or "contested subject". Phrases such as "hot-button issue", "divisive subject", or "heated topic" can also be applied. Other synonyms for "controversial issue" can be "polarizing topic", "disputed subject" or "contended matter". It is important to note that the use of synonyms can help in communication as it can offer other options for language that may help in reaching a common ground with others.