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”).
- (rare, archaic) Thorough, complete; solid; deep; profound
- 1869, Berjeau, The Book-worm:
- A groundly instruction, wherein the difference betwixt God the Father, and His Son the Lord Jesus Christ, is declared […]
- (rare, archaic) To the very ground, to the very bottom; thoroughly, completely; solidly; deeply; profoundly
- 1846, Galt, Life of Cardinal Wosley:
- Sir, when I groundly considered your provident forecast, as well for the conservation of your navy from damage, as the princely zeal that ye bear to preserve your subjects and their goods […]
- 1856, John Marston, James Orchard Halliwell-Phillipps, The works of John Marston:
- Those whom princes do once groundly hate, Let them provide to die as sure us fate.