intervene

Reading level: hard

Estimated CEFR level: C1 — Advanced

Estimated from word frequency; not an official CEFR classification.

Definition

verb get involved, so as to alter or hinder an action, or through force or threat of force
verb be placed or located between other things or extend between spaces and events
verb occur between other event or between certain points of time

Back-formation from intervention, and/or from Latin interveniō (“come between”, verb).

He intervened like an archangel. — Les Misérables, Victor Hugo
No branch, no leaf, intervened. — The Insidious Dr. Fu Manchu, Sax Rohmer
I was moved to intervene. — The Passionate Friends, H. G. (Herbert George) Wells

step in, interfere, interpose

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