Concerner is a French word that, in English, is translated to mean "to concern" or "to relate to." There are many words that can be used as synonyms for concerner, including pertain to, have to do with, relate to, touch on, and be relevant to. Other words that can be used are involve, deal with, address, impact, and affect. The choice of synonym depends on the context and tone of the sentence as well as the intended audience and purpose. All in all, there are a variety of words that can be used instead of concerner to convey the same meaning in different ways.