Chief
Mainline
Mainline verb - Inject into the vein.
Chief and mainline are semantically related in most important topic. Sometimes you can use "Chief" instead an adjective "Mainline".
Mutual synonyms
Both words in one sentence
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The covers of the first four mainline Halo games all feature Master Chief staring at something with a gun in hand.
Source: Idiosyncratic Cover Art -
The mainline Halo games are fought as the heroic Spartan super-soldier Master Chief.
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Cortana for the Chief in the mainline games.
Source: Exposition Fairy
Cite this Source
Mainline and Chief. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/chief/mainline
Chief & Mainline. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/chief/mainline>.
Mainline or Chief. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/chief/mainline.
Google Ngram Viewer shows how "chief" and "mainline" have occurred on timeline