different between prayerful vs prayerfully

English

From prayer +? -ful.

prayerful (comparative more prayerful, superlative most prayerful)

That prays frequently; characterised by prayer, devout, reverent. [from 17th c.]
- 2009, Diarmaid MacCulloch, A History of Christianity, Penguin 2010, p. 207:
  His extrovert craziness is an interesting counterpoint or safety valve to the ethos of prayerful silence and traditional solemnity which is so much part of Orthodox identity.

From prayerful +? -ly.

prayerfully (comparative more prayerfully, superlative most prayerfully)

In a prayerful manner; with prayer and reverence.
- 1900, Samuel Butler, transl. The Odyssey, Book V., page 72
  "Hear me, O king, whoever you may be, and save me from the anger of the sea-god Neptune, for I approach you prayerfully. […]

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