invisibly
in-vis-i-bly
adverb
In a manner that is impossible to see or perceive with the eye.
"The tiny crack was invisibly mended."
Thesaurus
Antonyms: visibly
in-vis-i-bly
In a manner that is impossible to see or perceive with the eye.
"The tiny crack was invisibly mended."
Antonyms: visibly