bafflingly
Definitions
In a manner that is impossible to understand or explain.
To a degree that causes confusion or bewilderment.
Examples
The instructions for assembling the bookshelf were bafflingly complex.
He remained bafflingly calm despite the chaotic situation unfolding around him.
Synonyms
puzzlingly perplexingly bewilderingly confusingly mysteriously inexplicably cryptically
Antonyms
clearly obviously plainly understandably logically predictably transparently