devout (adj.)
- abandoned
- active
- adoring
- afire
- ardent
- assured
- believing
- burning
- certain
- churchgoing
- committed
- compliant
- confident
- conforming
- conscientious
- constant
- convinced
- dedicated
- devoted
- devotional
- dogmatic
- duteous
- dutiful
- earnest
- faithful
- fervent
- fervid
- fiery
- flaming
- genuine
- godly
- heartfelt
- hearty
- heated
- holy
- hot
- hot-blooded
- impassioned
- imploring
- intense
- intent
- loyal
- meticulous
- mindful
- observant
- passionate
- perfervid
- persuaded
- pietistic
- pious
- pistic
- positive
- prayerful
- precative
- precatory
- punctilious
- punctual
- pure
- red-hot
- regardful
- religious
- resolute
- reverent
- reverential
- saintly
- satisfied
- scrupulous
- secure
- serious
- sincere
- solemn
- spirited
- staunch
- suppliant
- supplicant
- supplicatory
- sure
- theistic
- true
- vehement
- warm
- white-hot
- worshipful
- zealous