Etymograph

English

mainly

Mainly comes from Middle English maynly ‘bravely, mightily’, from mayn ‘strong, main’ + -ly.

  1. Middle Englishc. 1150–1500mayn
  2. Middle English, derivedc. 1150–1500maynly‘bravely’
  3. Englishearliest quotation c. 1587–1588mainly

attested reconstructed ? uncertain or disputed

Lineage

  1. Middle Englishc. 1150–1500mayn
  2. Middle English, derivedc. 1150–1500maynly‘bravely’
  3. Englishearliest quotation c. 1587–1588mainly

Earliest quotation: c. 1587–1588, Christopher Marlowe, Tamburlaine the Great. […] The First Part […]: “Such breadth of ſhoulders as might mainely beare Olde…”

Formed from main + -ly

Middle English mayn

English main

Today it means

adv Of a person or thing being the driving force influencing the outcome of an event; chiefly; certainly for the most part.

Language periods are conventional ranges, not dates for this word.

Etymograph / Middle English mayn / mainly