Definition
To act "somberly" means to behave in a serious, grave, or gloomy manner. It implies a lack of cheerfulness or levity. Think of it as carrying a heavy weight of sadness or concern. It suggests a subdued or restrained demeanor. Someone acting somberly might speak in a low voice or avoid eye contact. It can be a reaction to a sad event or a reflection of a generally pessimistic outlook. It's the opposite of being lighthearted or jovial.