The phrasal verb 'keep out' is primarily used in informal contexts but can also appear in semi-formal situations. Generally, it means to prevent someone or something from entering a place. It is often seen on signs as a directive, such as 'Keep Out' to indicate restricted access areas, thus marking it as frequently used in both spoken and written forms, particularly in warnings and instructions. Beyond physical spaces, 'keep out' can also metaphorically apply to abstract contexts, such as staying uninvolved in certain matters or people’s affairs. While its directness renders it less common in formal discourse, it remains a straightforward and widely understood expression in both everyday conversation and signage across English-speaking regions.
A2
Beginner
1. To prevent someone from entering a place or area.
The sign on the gate said "Keep Out."
The police put up barriers to keep out protesters.
We installed a new security system to keep intruders out.