'Chiefly' definitions:

Definition of 'chiefly'

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

Definition of 'Chiefly'

From: GCIDE
  • Chiefly \Chief"ly\, adv.
  • 1. In the first place; principally; pre["e]minently; above; especially. [1913 Webster]
  • Search through this garden; leave unsearched no nook; But chiefly where those two fair creatures lodge. --Milton. [1913 Webster]
  • 2. For the most part; mostly. [1913 Webster]
  • Those parts of the kingdom where the . . . estates of the dissenters chiefly lay. --Swift. [1913 Webster]

Synonyms of 'chiefly'

From: Moby Thesaurus