intervene
Cross references:
1. interpose
in.ter.vene also in.ter.ven.er \.int-*r-'ve-n\ \-'ve--n*r, -.no.(*)r\
\-'ve--n*r\ \-'ven-ch*n\ vi [L intervenire to come between, fr. inter- +
venire to come -m more at COME 1: to enter or appear as an irrelevant or
extraneous feature or circumstan ce 2: to occur, fall, or come between
points of time or events 3: to come in or between by way of hindrance or
modification {~ to settle a quarrel} 4: to occur or lie between two things
5a: to become a third party to a legal proceedings begun by others for the
protection of an alleged interest 5b: to interfere usu. by force or threat
of force in another nation's inte rnal affairs esp. to compel or prevent an
action or to maintain or alter a condition - in.ter.ven.or n