used to express surprise or disbelief

いやあ!, ほんと!
used to express surprise, realization, understanding

ああ, おお
used to express a strong feeling of surprise, wonder, admiration, or amazement

わお!, うわ!
used to express surprise, astonishment, or excitement

わー, うわー
used to express surprise or astonishment

うわっ!, すごい!
used to express one's surprise or bewilderment

やれやれ, びっくりした
said when one is surprised, shocked, or amazed

なんてこった!, びっくりした!
used to express astonishment, surprise, or amazement

なんてこった!, おお、すごい!
used to express a strong reaction to something surprising or unexpected

まじで!, あり得ない!
used in response to unexpected or circumstances to express surprise

まあまあ、思わず驚いてしまった!, おやおや、こんなところでお会いするとは!
used to express surprise, disbelief, or amazement about something that has just been said or observed

まあ、驚きだ!, 信じられない!
used to express one's surprise or bafflement at something unexpected or remarkable

あらあら, なんと
used to express a variety of emotions, including surprise and disbelief

まあ、なんてこった!, おっと、信じられない!
used to convey genuine surprise or interest in response to something someone has just said

本当に?それは素晴らしい!, 冗談じゃないの?それは素晴らしい!
used to express surprise, astonishment, or disbelief

なんてこった!, 驚いた!
used to express disbelief or surprise at a situation, event, or statement

なんだってば!(なんだ、これは!), いったい何なの!
