Front lines
Front line and front lines are semantically related. In some cases you can use "Front line" instead a noun phrase "Front lines".
Front line
Front line noun - The leading or most important part of a movement.
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Synonyms for Front line
Front lines and front line are semantically related. Sometimes you can replace phrase "Front lines" with "Front line", this phrases are similar.
Mutual synonyms
Cite this Source
Front line and Front lines. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/front_lines/front_line
Front lines & Front line. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/front_lines/front_line>.
Front line or Front lines. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/front_lines/front_line.
Google Ngram Viewer shows how "front lines" and "front line" have occurred on timeline