Intervene

Intervene is a verb meaning to come between to alter an outcome or to interfere in a situation in order to prevent, modify, or influence events. It can refer to actions taken to prevent harm, resolve a dispute, or affect a process, and its connotations vary with context, ranging from constructive assistance to meddling or coercion.

Etymology and usage notes: The word derives from Latin intervenire, from inter- “between” and venire “to come,” and entered English in the 14th century. Historically, it described passing between events, but modern usage emphasizes active involvement to affect results. Interventions can be voluntary or compelled and may be described as humanitarian, protective, diplomatic, military, or administrative, depending on the circumstances.

Contexts and examples: In international relations, intervention refers to one state or organization taking action in the affairs of another, often to prevent or end suffering or upholding interests. In law, a party may intervene in a case to advocate for a particular outcome. In medicine and public health, interventions are planned actions intended to prevent or treat disease, such as vaccination programs or behavioral health initiatives. In everyday life, individuals intervene to stop harm, de-escalate conflict, or assist someone in danger, with the phrasing typically “intervene in” a situation or “intervene between” two parties.

Related terms include intervention (the noun form), intercession, mediation, meddling (negative connotation), and nonintervention. The appropriateness of an intervention depends on factors such as necessity, consent, proportionality, and potential consequences.