UNDERSTANDINGLY
understandingly
(adverb) with understanding; “she nodded understandingly”
Source: WordNet® 3.1
Etymology
Adverb
understandingly (comparative more understandingly, superlative most understandingly)
In an understanding manner; with empathy.
(obsolete) In a way that can be understood; intelligibly.
Source: Wiktionary
Un`der*stand"ing*ly, adv.
Definition: In an understanding manner; intelligibly; with full knowledge
or comprehension; intelligently; as, to vote upon a question
understandingly; to act or judge understandingly.
The gospel may be neglected, but in can not be understandingly
disbelieved. J. Hawes.
Source: Webster’s Unabridged Dictionary 1913 Edition