'Solemnly' definitions:

Definition of 'solemnly'

From: WordNet
adverb
In a grave and sedate manner; "the judge sat there solemnly"

Definition of 'Solemnly'

From: GCIDE
  • Solemnly \Sol"emn*ly\, adv. In a solemn manner; with gravity; seriously; formally. [1913 Webster]
  • There in deaf murmurs solemnly are wise. --Dryden. [1913 Webster]
  • I do solemnly assure the reader. --Swift. [1913 Webster]