confine

confine — verb

1. to make sure that an activity, topic, or amount stays within a fixed boundary an

1.verbtransitiveC2
Definition

to make sure that an activity, topic, or amount stays within a fixed boundary and does not go beyond it — for example, confining a discussion to one subject or confining expenses to a monthly budget.

Example

Professor Nala confined her lecture to the first three chapters of the textbook.

confine + object + to + noun phrase

Bao confined his research to Southeast Asian frog species for his master's thesis.

confine + to + specific topic

Common collocations
  • confine discussion to
  • confine attention to
  • confine research to
  • confine spending to
  • confine yourself to
  • confine remarks to
  • confine criticism to
Synonyms
  • restrict

    very close in meaning; 'restrict' often suggests an external rule or regulation

  • limit

    broader and more common; can be used with or without 'to'

  • narrow down

    informal phrasal verb; implies reducing options gradually

Antonyms
  • expand

    to make something larger or cover more ground

  • broaden

    to widen the scope or range

Grammar Patterns

confine + object + to + noun phrase

confine + yourself + to + noun phrase

Usage Note

Takes a reflexive pronoun as the object to describe voluntary self-restriction (confine yourself to one topic). The object is always followed by the preposition 'to'.

Common Mistakes

I confined that we should focus on safety.
I confined my comments to safety issues.
'confine' requires an object followed by 'to'; it cannot introduce a 'that'-clause.
The report confines on economic data.
The report confines itself to economic data.
A reflexive pronoun (itself) is needed when the subject restricts its own scope.

2. to force a living being to stay inside an enclosed space, taking away their abil

2.verbtransitiveC2
Definition

to force a living being to stay inside an enclosed space, taking away their ability to move around freely — for example, locking a prisoner in a cell or being unable to get out of bed because of illness.

Example

After breaking his leg, Caleb was confined to a wheelchair for six weeks.

passive: be confined to [place/tool] for [time]

The zookeepers confined the injured eagle to a quiet indoor enclosure.

active: confine [animal] to [enclosure]

Common collocations
  • confined to bed
  • confined to a wheelchair
  • confined to a cell
  • confined to quarters
  • confined to the house
  • confined to an enclosure
Synonyms
  • imprison

    stronger, implies illegal detention or incarceration

  • cage

    specifically for animals; suggests a barred enclosure

  • isolate

    focuses on separation from others rather than physical enclosure

Antonyms
  • release

    to set free from confinement

  • free

    to allow movement without restriction

Grammar Patterns

be confined + to + place

confine + object + to + place

Usage Note

Very frequently used in the passive voice to describe a situation where external forces (injury, illness, punishment, safety rules) restrict someone's movement. The object is usually a person or animal, not a thing.

Common Mistakes

The cat confined in the house all day.
We confined the cat to the house all day.
In active voice, 'confine' needs an object followed by 'to'. Use passive: 'The cat was confined to the house all day.'
The doctor confined him three days.
The doctor confined him to bed for three days.
The preposition 'to' and the place/state are required after the object.

3. to be present, happen, or be found in just one location, region, or social group

3.verbtransitiveC2
Definition

to be present, happen, or be found in just one location, region, or social group, without appearing anywhere else.

Example

This rare butterfly species is confined to a single mountain range in Taiwan.

passive: be confined to [geographic location]

The virus was not confined to the capital but spread across the entire country.

Common collocations
  • confined to a region
  • confined to a population
  • confined to an area
  • largely confined to
  • mainly confined to
  • not confined to
  • no longer confined to
Synonyms
Antonyms

Grammar Patterns

be confined + to + location

be confined + to + group

Usage Note

Nearly always used in the passive voice. The subject is typically a natural phenomenon, disease, cultural practice, or body of knowledge. Often paired with adverbs such as 'largely', 'mainly', 'not', or 'no longer' to indicate the extent of the limitation.

Common Mistakes

This custom confines in this village.
This custom is confined to this village.
This sense requires the passive construction 'be confined to', not an active intransitive pattern.
The disease confines only old people.
The disease is confined to older adults.
Without 'to' and the passive form, the meaning changes to physically restraining people.

Word family

  • confinement
    nounC2
  • confined
    adjectiveC2
  • confining
    adjectiveC2
  • confines
    nounC2

Synonym discussion

Sense: verb/1

Confine, restrict, limit, and narrow down all involve setting a boundary. Confine suggests a deliberate and often tight boundary around a topic or activity, with a precise 'to' phrase specifying the limit. Restrict implies an externally imposed rule or regulation that limits behaviour or access, and it sounds more official (restricted area, restricted access). Limit is the broadest and most neutral term, covering both concrete and abstract boundaries (limit your sugar intake, limit the number of guests). Narrow down is an informal phrasal verb that focuses on reducing a set of possibilities step by step (narrow down the suspects). In academic or formal writing, confine and restrict are preferred; in everyday speech, limit is most natural.

confine ↗restrict ↗limit ↗narrow down

Common collocations

Adverbs

Phrases

  • be confined to
  • confine someone/something to

Prepositions

Etymology

LatinFrenchEnglish

The word 'confine' entered English in the early 16th century from French 'confiner', meaning 'to border on' or 'to keep within limits'. The French word was formed from Latin 'confinis' (adjacent, neighbouring), which in turn comes from 'com-' (together) and 'finis' (end, boundary, limit). Originally used in English to mean 'having a common border', the word gradually shifted toward the modern sense of 'keeping within boundaries or restrictions' by the late 1500s.