intervene - definition and synonyms

verb [intransitive] 

Your browser doesn’t support HTML5 audio

present tense
present participleintervening
past tenseintervened
past participleintervened
  1. 1
    to become involved in a situation in order to try to stop or change it

    The police had to intervene when protesters blocked traffic.

    intervene in:

    The prime minister has pledged not to intervene militarily in neighbouring countries.

  2. 4
    if time intervenes, it passes before you do something or before something happens

    Several months intervened before we met again.