RESTFULLY

restfully, quietly

(adverb) in a restful manner; “the streets are restfully sunny and still for the town is at mass”

Source: WordNet® 3.1

Etymology

Adverb

restfully (comparative more restfully, superlative most restfully)

In a restful manner.

Source: Wiktionary

RESTFUL

Rest"ful (rst"fl), a.

1. Being at rest; quiet. Shak.

2. Giving rest; freeing from toil, trouble, etc. Tired with all these, for restful death I cry. Shak.

– Rest"ful*ly, adv.

– Rest"ful*ness, n.

Source: Webster’s Unabridged Dictionary 1913 Edition