Definition, synonyms and related words
Alternative spelling of front line
"The frontline soldiers received urgent supplies from the rear."
In plain English: A frontline is the first line of defense where people directly face an enemy, danger, or difficult task before anyone else gets involved.
"Doctors often work on the frontline during an epidemic to treat severe cases directly."
Located at a front
"The frontline soldiers braved heavy rain to secure the ridge before dawn."
The word frontline combines the words front and line to describe a position at the very edge of an area or group. It entered English as a straightforward compound phrase without a shift from an original meaning that differed significantly from its current use.