from The Century Dictionary.

  • As to the basis or foundation; with regard to fundamentals or essentials; in principles; solidly; not superficially; carefully.

from the GNU version of the Collaborative International Dictionary of English.

  • adverb obsolete Solidly; deeply; thoroughly.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective rare, archaic Thorough, complete; solid; deep; profound
  • adverb rare, archaic To the very ground, to the very bottom; thoroughly, completely; solidly; deeply; profoundly


from Wiktionary, Creative Commons Attribution/Share-Alike License

From Middle English grundlich ("profound, radical, solid"), equivalent to ground +‎ -ly. Cognate with German gründlich ("thorough, careful, deep, profound"), Swedish grundlig ("thorough, in depth, profound, radical").


  • "No man," he wrote, "can more groundly consider the politic governance of your said realm, nor more assuredly look to the preservation thereof, than ye yourself."

    Henry VIII.

  • Think you not that the world may groundly say, Some great iniquity lies hid in the skirts of your brethren; when in truth the transgression is yet your own?

    Works of John Bunyan — Volume 02


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