close in

move closer to someone or something, often to attack or catch them

B2

What does "close in" mean?

To close in means to move gradually nearer to someone or something from the surrounding area, often with the intention of catching, attacking, or trapping them. The movement is typically slow and deliberate, with the sense that escape is becoming more difficult. It is used both literally — for police surrounding a suspect, soldiers advancing on a position, or predators approaching prey — and metaphorically, when something threatening or inevitable feels like it is pressing in from all sides. In this metaphorical sense, it often describes natural forces such as darkness, fog, or winter, or abstract pressures like a looming deadline. The continuous form is especially common because the action is progressive rather than sudden.

Examples

How to use it

close in on + person/target

Use 'on' to specify the person, place, or thing being approached or encircled.

The rescue team was closing in on the missing hikers when the storm hit.

subject + close in (no target specified)

When the target is clear from context, or when the focus is on the atmosphere of encirclement rather than a specific target, 'on' and the target can be dropped.

The fog was closing in and the ferry captain decided to delay departure.

close in from + direction/position

Use a prepositional phrase to describe the direction or angle of the approach, often emphasising encirclement from multiple sides.

Rival gangs were closing in from both ends of the street, leaving no obvious exit.

close in for + purpose

Use 'for' to indicate the intended action at the end of the approach, most commonly in action or hunting contexts.

The officers drew their weapons as they closed in for the arrest.

abstract subject + close in

Natural forces or abstract threats (darkness, winter, deadlines) can be the subject, giving the sentence a metaphorical sense of something oppressive or inevitable approaching.

With the deadline closing in, the whole team was working through the night.

Common Collocations

close in on a suspectclose in on the enemydarkness closing innight closing inclose in from all sidesclose in for the kill

Common Mistakes

Using a direct object after the verb

'Close in' is intransitive, so you cannot place a noun or pronoun directly after it. To name the target, you must use the preposition 'on'.

✗ The police closed in the suspect near the docks.
✓ The police closed in on the suspect near the docks.
Confusing 'close in on' with 'zero in on'

'Close in on' describes gradually surrounding or approaching something, while 'zero in on' means to focus precisely on a specific target or detail — the two are not interchangeable.

✗ Investigators finally zeroed in on the building and made their move.
✓ Investigators finally closed in on the building and made their move. (if the meaning is physical approach/encirclement)
Avoiding the continuous form

Because closing in describes a gradual, progressive movement, the continuous aspect sounds most natural. Using the simple present outside of narrative contexts can sound abrupt or unnatural.

✗ The enemy closes in and we have no way out.
✓ The enemy is closing in and we have no way out.

Usage

This phrasal verb is neutral in register and works in both spoken and written English. It is especially common in the past or present continuous tense because the action is gradual, and it has a very natural metaphorical use with weather and time (e.g. 'winter is closing in').

Frequently Asked Questions

Does 'close in' always involve people chasing someone?

No — while it is very common in pursuit or hunting contexts, 'close in' is also frequently used to describe natural forces or abstract threats. Phrases like 'darkness closing in', 'winter closing in', or 'a deadline closing in' are all natural and extremely common, especially in everyday speech and writing.

Do I always need to say 'close in on'? Can I just say 'close in'?

Both are possible. When you want to name the target of the approach, use 'close in on someone/something'. When the target is obvious from context, or when you want to create a more atmospheric effect, you can drop 'on' and the target entirely — for example, 'Night was closing in' works perfectly on its own.

Why does 'close in' sound strange in the present perfect simple?

Because the meaning is about gradual, ongoing movement, the present perfect simple — which emphasises a completed action — feels slightly awkward unless you specifically mean that a full encirclement has been completed. In most cases, the continuous form (past or present) sounds much more natural.

Can 'close in' be used in a passive sentence?

No. 'Close in' is intransitive, which means it has no object and therefore cannot be turned into a passive construction. The subject is always the thing doing the approaching.

Is 'close in' used more in writing or in speech?

It works naturally in both. It appears frequently in journalistic writing, action narratives, and thrillers, but it is also common in everyday spoken English — particularly the metaphorical uses with weather and time, such as 'winter's closing in' or 'I can feel the deadline closing in'.

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