Understandingly \Un`der*stand"ing*ly\, adv.
In an understanding manner; intelligibly; with full knowledge
or comprehension; intelligently; as, to vote upon a question
understandingly; to act or judge understandingly.
[1913 Webster]
The gospel may be neglected, but in can not be
understandingly disbelieved. --J. Hawes.
[1913 Webster]