What does "controversial photo" mean? Can I use "controversial" to other words as well?
The word "controversial" means to cause disagreement or discussion. In this video, President Trump took a picture that caused discussion and disagreement among the United States. To answer your second question, yes you can use "controversial" with other words as well. Ex: He wrote a controversial paper that caused anger among his peers. Ex: The debate was focused on the controversial topic of legalizing marijuana.
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