inroad
UK: ˈɪn.rəʊd | US: ˈɪn.roʊd
n. 1. An advance or penetration into enemy territory; an incursion.
n. 2. A noticeable impact or encroachment on something (e.g., "made inroads into the market").
The word "inroad" originates from Middle English, combining "in" (meaning "into") and "road" (originally meaning "a riding, journey, or path"). Historically, it referred to a hostile invasion or incursion, literally "riding into" enemy territory. Over time, it evolved metaphorically to describe any significant advance or encroachment, such as progress in a competitive field.
The army made a sudden inroad across the border.
The company hopes to make inroads into the Asian market this year.
His speech made significant inroads into public opinion.
The new policy is an inroad on individual freedoms.
Technological advancements have created inroads in medical research.