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Webster 1913 Edition
Happily
1. 
By chance; peradventure; haply. 
[Obs.] 
Piers Plowman.
 2. 
By good fortune; fortunately; luckily. 
Preferred by conquest, 
happily 
o’erthrown. Waller.
3. 
In a happy manner or state; in happy circumstances; 
as, he lived 
. happily 
with his wife4. 
With address or dexterity; gracefully; felicitously; in a manner to insure success; with success. 
Syn. – Fortunately; luckily; successfully; prosperously; contentedly; dexterously; felicitously. 
Webster 1828 Edition
Happily
HAP'PILY
,adv.
   Preferr'd by conquest, happily o'erthrown.
1.
  In a happy state; in a state of felicity. He lived happily with his consort.
2.
  With address or dexterity; gracefully; in a manner to ensure success. Formed by thy converse, happily to steer
 From grave to gay, from lively to severe.
3.
  By chance.  [See Haply.]Definition 2025
happily
happily
English
Adverb
happily (comparative more happily, superlative most happily)
-  (archaic) By chance; perhaps.
-  1603, John Florio, translating Michel de Montaigne, Essayes, London: Edward Blount, OCLC 946730821, II.12:
- And who knoweth whether a thousand yeares hence a third opinion will rise, which happily shall overthrow these two precedents?
 
 
 -  1603, John Florio, translating Michel de Montaigne, Essayes, London: Edward Blount, OCLC 946730821, II.12:
 - By good chance; fortunately, successfully.
 -  In a happy or cheerful manner; with happiness.
-  1808, Daniel Defoe, The Life and Adventures of Robinson Crusoe, Minerva Press for Lane and Newman, page 311:
- And thus I have given the first part of a life of fortune and adventure, a life of Providence's chequer-work, and of a variety which the world will seldom be able to shew the like of: beginning foolishly, but closing much more happily than any part of it ever gave me leave to much as to hope for.
 
 
 -  1808, Daniel Defoe, The Life and Adventures of Robinson Crusoe, Minerva Press for Lane and Newman, page 311:
 - With good will; in all happiness; willingly.
 
Translations
by good chance, fortunately
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in a happy manner
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willingly
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