Definition of Grandly

Babylon English Dictionary
in an impressive manner; splendidly, wonderfully, magnificently
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Grandly Definition from Language, Idioms & Slang Dictionaries & Glossaries
Webster's Revised Unabridged Dictionary (1913)
(adv.)
In a grand manner.
  
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
hEnglish - advanced version

grandly
\grand"ly\, adv. in a grand manner. [

WordNet 2.0

Adverb
1. in a grand manner; "the mansion seemed grandly large by today's standards"
(pertainym) expansive, grand