adverb taking the 'to' particle
blankly; vacantly; dazedly; in puzzlement
Describes a facial expression or state of being momentarily stunned, confused, or at a loss, often with a blank stare. Typically used with する or とした.
突然の質問に、彼はきょとんとした顔をした。
At the sudden question, he looked blankly puzzled.
猫は大きな音にきょとんとしていた。
The cat was staring vacantly at the loud noise.