i Register
In some senses, devout is marked as archaic, obsolete. Watch for register when choosing this word.
adj
Devoted to religion or to religious feelings and duties; pious; extremely religious; godly.
a devout man, and one that feared God
We must be constant and devout in the worship of our God.
Expressing devotion or piety.
devout sighs; devout eyes; a devout posture
Warmly devoted; hearty; sincere; earnest.
devout wishes for one's welfare
noun
A devotee.
A devotional composition, or part of a composition; a devotion.