D defs.my
Entry 1 sense Webster, 1913

Principally

/prĭn'-sĭp-lē/ · Prin·ci·pal·ly · IPA /prˈɪnsɪpliː/
01 adv. In a principal manner; primarily; above all; chiefly; mainly.
  1. 1.
    In a principal manner; primarily; above all; chiefly; mainly.