Meaning of “intervene” in the English Dictionary

"intervene" in British English

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interveneverb [ I ]

uk /ˌɪn.təˈviːn/ us /ˌɪn.t̬ɚˈviːn/

intervene verb [ I ] (GET INVOLVED)

C2 to intentionally become involved in a difficult situation in order to improve it or prevent it from getting worse:

The Central Bank intervened in the currency markets today to try to stabilize the exchange rate.
[ + to infinitive ] The minister intervened personally to stop the museum from being closed.

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intervention
noun [ C or U ] uk /ˌɪn.təˈven.ʃən/ us /ˌɪn.t̬ɚˈven.ʃən/

Examples

C2

Half the people questioned said they were opposed to military intervention (in the civil war).
Repeated interventions on the currency markets have failed to prevent the value of the currency falling.

(Definition of “intervene” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"intervene" in American English

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interveneverb [ I ]

us /ˌɪn·tərˈvin/

intervene verb [ I ] (GET INVOLVED)

to become involved intentionally in a difficult situation in order to change it or improve it, or prevent it from getting worse:

The superpowers began to intervene in local struggles in Africa.

intervene verb [ I ] (COME BETWEEN)

to happen between two events, or to prevent something from happening by happening first:

Two decades intervened between the completion of the design and the opening of the theater.

(Definition of “intervene” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"intervene" in Business English

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interveneverb [ I ]

uk /ˌɪntəˈviːn/ us

to become involved in a difficult situation in order to improve it or prevent it from getting worse:

intervene in sth The Central Bank intervened in the currency markets today to try to stabilize the exchange rate.
The company has resolved the issue, and there is no need for the courts to intervene.

(Definition of “intervene” from the Cambridge Business English Dictionary © Cambridge University Press)