propitiously is a form of:

Propitious



adjective
1.
(favorable, auspicious, favorably inclined) ដែលល្អ, ប្រកបដោយឬកពារដ៏ប្រសើរ
ENGLISH MEANING
adjective
1.
Convenient; auspicious; favorable; kind; as, a propitious season; a propitious breeze.
2.
Hence, kind; gracious; merciful; helpful; -- said of a person or a divinity.