close in on
B2 neutral inseparable transitive
In simple words
When people or animals move closer and closer around something until it is surrounded or caught.
Literal meaning: To move ('close') inward ('in') specifically toward ('on') a target.
Meanings
1 B2 neutral
To approach and surround a person or thing from all sides, especially in pursuit.
"Detectives were closing in on the fraud suspect after uncovering his financial records."
Grammar: inseparable
2 B2
idiomatic
neutral
To come progressively closer to achieving a goal, breaking a record, or reaching a solution.
"Scientists feel they are finally closing in on a cure for the disease."
Grammar: inseparable
Usage notes
Used in the context of pursuit (police, predators, armies), but also used figuratively when someone is getting closer to achieving a goal or solving a problem. Common in journalism and fiction.
Commonly used with
suspect target prey answer victory record
Forms
Base
close in on
I/you/we/they
3rd person
closes in on
he/she/it
Past simple
closed in on
yesterday
Past participle
closed in on
have + pp
-ing form
closing in on
continuous
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