mysteriously
adverb
- in a secret or unknown manner
Wiktionary
adv
Etymology: From Middle English misteriusly, equivalent to mysterious + -ly.
- In a mysterious manner.
“Fore-shadows, call them rather fore-splendours, of that Truth, and Beginning of Truths, fell mysteriously over my soul.”
“'Are there any hares about here?' I asked. 'Well, there are some left to be sure,' answered the peasant; 'on the Sukkestad-moor there is an old jack-hare, which many a hound and sportsman have been after, but he is not so easily killed, it appears.' And the worthy peasant shook his head somewhat mysteriously.”