invisibly
/ɪnˈvɪzɪbli/ /ɪnˈvɪzi.bli/Definitions
1. adverb
in a way that cannot be seen or noticed
“She smiled invisibly to herself as she thought about the surprise party.”
2. adverb
in a way that is not apparent or observable
“The effects of the new policy were felt invisibly throughout the economy.”