Douglas Harper's Etymology Dictionary
adv. In a medieval way.
Usage examples of "medievally".
I gather the medievally economic Loram is not good enough for Cambridge.
The towns the circus stopped in, whether just to spend a night or to set up and show, were medievally picturesque—gabled houses with half-timbered or weathered stone fronts and steep roofs dotted all over with dormer windows.
He took very good care of Brother Paul, doing everything medievally possible to promote his health.