PENITENTIALLY

penitently, penitentially, repentantly

(adverb) showing remorse

Source: WordNet® 3.1

Etymology

Adverb

penitentially (comparative more penitentially, superlative most penitentially)

In a penitential manner.

Source: Wiktionary

Pen`i*ten"tial*ly, adv.

Definition: In a penitential manner.

PENITENTIAL

Pen`i*ten"tial, a. Etym: [Cf. F. pénitentiel.]

Definition: Of or pertaining to penitence, or to penance; expressing penitence; of the nature of penance; as, the penitential book; penitential tears. "Penitential stripes." Cowper. Guilt that all the penitential fires of hereafter can not cleanse. Sir W. Scott.

Pen`i*ten"tial, n. (R. C. Ch.)

Definition: A book formerly used by priests hearing confessions, containing rules for the imposition of penances; -- called also penitential book.

Source: Webster’s Unabridged Dictionary 1913 Edition