Intervene
/ˌɪntəˈrvin/
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Definition
(verb) To become involved in a situation, so as to alter or prevent an action.
Sentence Examples
Years intervene between the two incidents.
There may be other factors that intervene in the relation between these two constants.
CEFR Practice Quiz
The referee had to ____ to stop the game before the players' argument escalated into a fight.