"Low-key" refers to a style or attitude that is understated and not overly flashy. It often describes situations, events, or personalities that are calm, relaxed, and not seeking attention. For example, a low-key party might have soft lighting and quiet music, creating a cozy atmosphere where guests can enjoy each other's company without distractions. In terms of personality, a low-key person tends to be modest and unassuming. They may prefer simple pleasures and avoid drawing attention to themselves. This can be seen in celebrities like Keanu Reeves, who is known for his humble demeanor despite his fame, embodying the essence of being low-key.