| verb | get involved, so as to alter or hinder an action, or through force or threat of force “Why did the U.S. not intervene earlier in WW II?” |
| verb | be placed or located between other things or extend between spaces and events “This interludes intervenes between the two movements” |
| verb | occur between other event or between certain points of time “the war intervened between the birth of her two children” |
| intervenor | noun | (law) a party who interposes in a pending proceeding |
| intervention | noun | the act of intervening (as to mediate a dispute, etc.) |
| interference | noun | a policy of intervening in the affairs of other countries |