front-line
UK: ˈfrʌnt.laɪn | US: ˈfrʌnt.laɪn
adj. relating to or involving the most important or active part of an activity or area of work
n. the most advanced or important position in a particular activity or field
The word "front-line" originated in military contexts, combining "front" (from Old French front, meaning "forehead" or "foremost part") and "line" (from Latin linea, meaning "string" or "boundary"). It originally described the foremost position in battle. Over time, it expanded metaphorically to denote the most critical or active position in any field (e.g., healthcare, business). The morphemes retain their original meanings, emphasizing proximity to action or danger.
Front-line workers faced immense pressure during the pandemic.
The company invested in front-line technology to stay competitive.
Soldiers on the front-line displayed extraordinary bravery.
Teachers are the front-line of education reform.
The report highlights challenges for front-line healthcare staff.