intervene
intransitive-verb
UK: /ˌɪntəˈviːn/
US: /ˌɪntərˈviːn/
To get involved in a situation to try to stop a fight, argument, or problem.
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I had to intervene when the kids started arguing.
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The teacher had to intervene to stop the fight between the two students in the hallway.
To interrupt someone when they are speaking.
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Can I intervene here and ask a question?
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She intervened in the conversation to offer a different perspective on the issue.
To occur between times or events.
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Two years intervened between his visits.
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A long period of silence intervened before she finally answered the question posed.