What is another word for mainline?
Pronunciation: [mˈe͡ɪnla͡ɪn] (IPA) 
Mainline is a versatile term that can be used to describe a variety of things such as a main artery, a primary or important aspect of something, or a major transportation route. Synonyms for mainline include "majority," "core," "central," "principal," "dominant," "predominant," and "leading." These words can be used interchangeably with mainline depending on the context of the sentence. For example, "the central issue," "the core element," and "the leading concern" all convey the meaning of something being of primary importance. Similarly, "the predominant color," "the dominant culture," and "the majority view" all convey the idea of something being the main or most prevalent aspect.
