frontline
Americanadjective
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located or designed to be used at a military front line.
a frontline ambulance helicopter.
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of, relating to, or involving the forefront in any action, activity, or field.
a frontline TV reporter.
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highly experienced or proficient in the performance of one's duties.
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of or relating to essential work that depends on in-person interactions and may involve some risk, especially policing, healthcare, emergency services, public transit, grocery, warehouse, and delivery work.
Congress is taking up a bill that would guarantee sick leave and hazard pay to frontline workers.
Etymology
Origin of frontline
First recorded in 1910–15; front (in the military sense) + line 1 ( def. )
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
New recruit Gonzalo Garcia comes in £0.5m more expensive to provide competition in the Fulham frontline, with Muniz producing one goal and one assist from 10 starts last season.
From BBC ● Aug. 14, 2026
The result of such sustained attacks is that the civilian population close to the frontline are getting increasingly cut off from health services.
From BBC ● Aug. 8, 2026
"Given the terrible toll on communities and frontline workers, we are encouraged that the approved Ebola vaccine Ervebo... could help reduce severe illness and deaths."
From Barron's ● Aug. 7, 2026
For more than a decade it has been a frontline, the first Greek soil that exhausted, terrified people touch when they cross from Turkey in boats that were never built for open water.
From Salon ● Aug. 5, 2026
Out beyond the frontline trenches, no man’s land separating the opposing armies might be anywhere from a mile or more across to barely twenty-five yards wide.
From "The War to End All Wars: World War I" by Russell Freedman
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.