D defs.my
Entry 2 senses Webster, 1913

Radically

/(răd"ĭ*kal*ly̆)/ · Rad·i·cal·ly · IPA /ˈɹædɪkli/
01 adv. In a radical manner; at, or from, the origin or root; fundamentally; as, a scheme or system radically wrong or defective.
  1. 1.
    In a radical manner; at, or from, the origin or root; fundamentally; as, a scheme or system radically wrong or defective.
  2. 2.
    Without derivation; primitively; essentially.[R.]
    “These great orbs thus radically bright.” Prior.