inroad

Universal Words noun ~ (into sth) something that is achieved, especially by reducing the power or success of sth else: This deal is their first major inroad into the American market. IDIOMS make inroads into / on sth if one thing makes inroads into another, it has a noticeable effect on the second thing, especially by reducing it, or influencing it: Tax rises have made some inroads into the country's national debt. * By the 1950s, television had made great inroads into the territory of the news magazines.