Concern/kənˈsɜːrn/ Definition 1 of 4Pro Tip 1/3Emotional Weight Consider 'concern' to express personal importance and a bit of emotional investment. The issue of privacy is a significant concern for many people. Pro Tip 2/3Not Always Negative 'Concern' can refer to positive areas of interest, not just worries. Renewable energy is a key concern in his research. Pro Tip 3/3Varying Intensity The word can indicate different levels of worry, from mild to substantial. There's a growing concern about the number of homeless cats.