mainly Meaning, Definition & Usage

  1. adverb for the most part
    principally; in the main; chiefly; primarily.
    • he is mainly interested in butterflies

WordNet

Main"ly adverb
Etymology
From main strong. See Main strength.
Definitions
  1. Very strongly; mightily; to a great degree. Obs. Bacon. Shak.
Main"ly adverb
Etymology
From main principal, chief.
Definitions
  1. Principally; chiefly.

Webster 1913