D defs.my
Entry 4 senses Webster, 1913

Heavily

/hĕv'-əl-ē/ · Heav·i·ly · IPA /ˈhɛvɪli/
01 adv. In a heavy manner; with great weight; as, to bear heavily on a thing; to be heavily loaded.
  1. 1.
    In a heavy manner; with great weight; as, to bear heavily on a thing; to be heavily loaded.
    Heavily interested in those schemes of emigration.” — The Century.
  2. 2.
    As if burdened with a great weight; slowly and laboriously; with difficulty; hence, in a slow, difficult, or suffering manner; sorrowfully.
    “And took off their chariot wheels, that they drave them heavily.” — Ex. xiv. 25.
    “Why looks your grace so heavily to-day?” Shak.
  3. 3.
    Greatly; intensely; as, heavily involved in a plot; heavily invested in real estate.
  4. 4.
    In large quantity; as, it rained heavily.