inter- ‘between’ + venire ‘come’

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INTERPOSE, INTERFERE, INTERVENE, MEDIATE, INTERCEDE mean to come or go between.

INTERPOSE often implies no more than this.

e.g. interposed herself between him and the door

INTERFERE implies hindering.

e.g. noise interfered with my concentration

INTERVENE may imply an occurring in space or time between two things or a stepping in to stop a conflict.

e.g. quarreled until the manager intervened

MEDIATE implies intervening between hostile factions.

e.g. mediated between the parties

INTERCEDE implies acting for an offender in begging mercy or forgiveness.

e.g. interceded on our behalf

verb no object

1. come between so as to prevent or alter a result or course of events:

〈人などが〉(調停･和平などのため) «…に» 干渉する, 介入する «in» ; «…の間を» 仲裁する, 取りなす «between»

e.g. he acted outside his authority when he intervened in the dispute

e.g. with infinitive : their forces intervened to halt the attack.

(of an event or circumstance) occur as a delay or obstacle to something being done:

〈物･事が〉じゃまに入る

e.g. Christmas intervened and the investigation was suspended.

interrupt verbally:

〈人が〉(会話に)割り込む

e.g. with direct speech : “It's true!” he intervened.

Law interpose in a lawsuit as a third party.

〘法〙 〈第三者が〉訴訟に参加する

2. (usually as adjective intervening) occur in the time between events:

〖名詞の前で〗間の, 間に起こる〈年月など〉

e.g. to occupy the intervening months she took a job in a hospital.

be situated between things:

e.g. they heard the sound of distant gunfire, muffled by the intervening trees.

intervener |ˌin(t)ərˈvēnər| noun

intervenient |-ˈvēnyənt| adjective

intervenor |-ˈvēnər| noun

late 16th century (in the sense ‘come in as an extraneous factor or thing’): from Latin intervenire, from inter- ‘between’ + venire ‘come’.