SUNNILY
pleasantly, cheerily, sunnily
(adverb) in a cheerful manner; “‘I’ll do the dishes,’ he said pleasantly”
Source: WordNet® 3.1
Etymology
Adverb
sunnily (comparative more sunnily, superlative most sunnily)
In a sunny fashion; optimistically
Source: Wiktionary
SUNNY
Sun"ny, a. [Compar. Sunnier; superl. Sunniest.]
1. Of or pertaining to the sun; proceeding from, or resembling the
sun; hence, shining; bright; brilliant; radiant. "Sunny beams."
Spenser. "Sunny locks." Shak.
2. Exposed to the rays of the sun; brightened or warmed by the direct
rays of the sun; as, a sunny room; the sunny side of a hill.
Her blooming mountains and her sunny shores. Addison.
3. Cheerful; genial; as, a sunny disposition.
My decayed fair A sunny look of his would soon repair. Shak.
Sun"ny, n. (Zoöl.)
Definition: See Sunfish (b).
Source: Webster’s Unabridged Dictionary 1913 Edition