D defs.my
Entry 1 sense Webster, 1913

Groundly

· Ground·ly · IPA /ˈɡɹaʊndli/
01 adv. Solidly; deeply; thoroughly.
  1. 1.
    Solidly; deeply; thoroughly.[Obs.]
    “Those whom princes do once groundly hate, Let them provide to die as sure us fate.” — Marston.