'Mainly' definitions:

Definition of 'mainly'

From: WordNet
adverb
For the most part; "he is mainly interested in butterflies" [syn: chiefly, principally, primarily, mainly, in the main]

Definition of 'Mainly'

From: GCIDE
  • Mainly \Main"ly\, adv. [From main strong. See Main strength.] Very strongly; mightily; to a great degree. [Obs.] --Bacon. Shak. [1913 Webster]

Definition of 'Mainly'

From: GCIDE
  • Mainly \Main"ly\, adv. [From main principal, chief.] Principally; chiefly. [1913 Webster]

Synonyms of 'mainly'

From: Moby Thesaurus