The phrasal verb "close in" is often found in both informal and semi-formal speech, though it leans more towards informal usage. It typically describes a situation where something is surrounding or approaching something else, usually in a threatening or encroaching manner. Common contexts include descriptions of weather, such as fog or storm clouds closing in, or in strategic scenarios, as in troops or enemies closing in on a target. Additionally, it may be used metaphorically to describe a situation becoming more urgent or restrictive, as in "the deadline is closing in." It can also imply narrowing options or opportunities. "Close in" conveys a sense of impending challenge or confinement, often with an emphasis on time or space running out.
B2
UpperIntermediate
1. To surround or encroach upon from all sides, often creating a sense of threat or pressure.
The fog began to close in, reducing visibility to just a few feet.
As night fell, the wolves started to close in on the lone traveler.
The army closed in on the enemy soldiers, leaving them no escape.
2. To approach or come nearer in space or time.
The deadline for the project is closing in faster than we expected.
The marathon runners could see the finish line as they closed in on the last mile.
Storm clouds closed in, signaling that the rain was imminent.