unnoticed or undetected
незамеченный или не обнаруженный (nezamechenniy ili ne obnaruzhenniy)
"He stayed under the radar during the investigation."
"Он оставался незаметным в ходе расследования." (On ostalsya nezametnym v khode rassledovaniya.)
to enroll in or agree to participate in something
false or misleading information presented as news
to sit down and relax, especially after working hard
secretly or without public knowledge
take a risk hoping for more success
to move away or stop pressuring someone