1.
blankly, with a puzzled look, dumbfounded
Describes the expression or state of looking confused and not understanding what is happening, often with wide eyes and a blank face.
Onomatopoeic/mimetic word (擬態語).
Common patterns
Nuance: きょとん implies innocent bewilderment rather than deep shock. It suggests the person simply doesn't understand what is going on, often in a mildly comical or endearing way. Frequently used to describe children or animals.