inaudibly
in-au-di-bly
adverb
In a way that is impossible to hear, or too quiet to be heard.
"She whispered the secret inaudibly."
Thesaurus
Antonyms: audibly
in-au-di-bly
In a way that is impossible to hear, or too quiet to be heard.
"She whispered the secret inaudibly."
Antonyms: audibly