intervene

/ˌin-tər-ˈvēn/

Latin intervenire to come between, from inter- + venire to come

verb

  1. to occur, fall, or come between points of time or events

  2. to interfere with the outcome or course especially of a condition or process (as to prevent harm or improve functioning)

  3. to come in or between by way of hindrance or modification

only six months intervened between their marriage and divorce

interpose interfere intervene mediate intercede mean to come or go between. interpose often implies no more than this. interfere implies hindering.