Another word for interference
The act of obstructing
intervention, resistance, retardation, impedance, checking, blocking, barring, hampering, clashing, collision, tackling, interception, hindrance, restraint, inhibition, shutting off, clogging, choking, arrest, barricading, thrusting between, interposition; see also opposition 1, restraint 2.
Taking forcible part in the affairs of others
That which obstructs