Webster's Revised Unabridged Dictionary · 1913

Happily

Happily (hap"pi*ly) , adverb

[From Happy.]

1.
By chance; peradventure; haply. [Obsolete] — 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 wife.
4.
With address or dexterity; gracefully; felicitously; in a manner to insure success; with success.
Formed by thy converse, happily to steer From grave to gay, from lively to severe. — Pope