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intervene verb

1 become involved in a situation

ADV. actively, directly | personally | decisively | effectively, successfully | militarily Intervening militarily will not bring peace.

VERB + INTERVENE be forced to, have to Eventually, the army was forced to intervene. | be reluctant to | be powerless to Local people feel strongly about the proposed development but are virtually powerless to intervene. | have the power to, have the right to Our government has no right to intervene. | refuse to The UN refused to intervene.

PREP. against They would not intervene against the rebels themselves. | between She went over to intervene between the two men. | in She was reluctant to intervene in what was essentially a private dispute. | on behalf of The King intervened personally on behalf of the children. | with to intervene with the authorities on the prisoners' behalf