Religiousness

re·li·gious  (r-ljs)

adj.

1. Having or showing belief in and reverence for God or a deity.

2. Of, concerned with, or teaching religion: a religious text.

3. Extremely scrupulous or conscientious: religious devotion to duty.

n. pl. religious

A member of a monastic order, especially a nun or monk.

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[Middle English, from Old French, from Latin religisus, from religi, religion; see religion.]

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re·ligious·ly adv.

re·ligious·ness n.

Synonyms: religious, devout, pious
These adjectives mean having or showing a belief in and veneration for God or a divine power, especially as it is reflected in the practice of religion. Religious implies adherence to religion in both belief and practice: The cathedral at Chartres is an expression of the religious fervor of the Middle Ages.
Devout connotes ardent faith and sincere devotion: Devout Muslims observe Ramadan punctiliously.
Pious stresses dutiful, reverential discharge of religious duties: a pious woman who attends Mass every morning.

Thesaurus

Noun	1.	religiousness - piety by virtue of being devout devoutness piety, piousness - righteousness by virtue of being pious religiosity, religiousism, pietism, religionism - exaggerated or affected piety and religious zeal
	2.	religiousness - the quality of being extremely conscientious; "his care in observing the rules of good health amounted to a kind of religiousness" conscientiousness - the quality of being in accord with the dictates of conscience