When it comes to expressing a sense of worry or interest in a particular topic, there are many synonyms for the phrase "are concerned." These include phrases such as: are interested in, are focused on, are bothered by, are invested in, are attentive to, and are paying attention to. These synonyms provide writers and speakers with a variety of linguistic options to effectively convey their concerns or interests in a particular matter. By using these words interchangeably, a person can also avoid repetition and keep their writing or speaking engaging and dynamic.