mightily

Etymology

mighty + -ly

adv

  1. In a mighty manner; with strength or force.
  2. Enormously, to a great extent.
    The Billingham fertiliser traffic has grown mightily in the past few seasons. 1960 September, G. Freeman Allen, “I.C.I. fertiliser goes by rail from Tees-side”, in Trains Illustrated, page 533
  3. (US, regional) Thoroughly; entirely.
    He sounded mightily proud of himself.

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