Under the radar.
Under the radar.
Being "under the radar" means to go unnoticed or not attract any attention, similar to how a small or stealthy aircraft might fly below the level at which radar can detect it. This idiom is often used to describe someone or something quietly doing something without drawing attention.
He stayed under the radar.
He stayed inconspicuous to avoid attention.
The spy managed to stay under the radar for years.
The spy successfully avoided detection for many years.
Despite his successful career, he preferred to remain under the radar.
Despite his career success, he chose to stay unnoticed.