Keep your head down
Meaning
Avoid drawing attention, especially in difficult situations.
Usage
Advises people to stay discreet.
Origin & History
Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.
Military advice to avoid enemy fire.
Used since the early 20th century in wartime contexts.