i Register
In some senses, devoutful is marked as obsolete. Watch for register when choosing this word.
adj
Full of devotion; devoted or pious.
Sacred.
[T]o ſelect among ten thouſand faires, / A Lady farre inferior to the moſt, / In faire proportion both of limbe and ſoule: / To take her from auſterer check of parents, / To make her his by moſt deuoutfull rightes, / Make her commandreſſe of a better eſſence / Then is the gorgious world even of a man.