Translation of "Aback" in Japanese

I was a little taken aback.

私は少し面食らった。

I was taken aback at the shadow.

影におどろいてしまいました。

I was taken aback at the answer.

その返事には開いた口が塞がらなかった。

I was taken aback by a thunderclap.

私は雷鳴にぎょっとした。

I was taken aback by the news.

私はそのニュースにびっくりした。

I was taken aback by his rudeness.

私は彼の無礼さに驚いた。

I was completely taken aback by her reasoning.

彼女の理屈には全く面食らった。

Walter was taken aback by John's cruel insult.

ウォルターはジョンのひどい侮辱に面食らった。

I was quite taken aback at their bad manners.

彼らの行儀の悪さに全く驚いた。

When I first met him, I was taken aback by his unexpected question.

初めて彼に会ったとき、意外な質問にびっくりしました。

- I was taken aback by his rudeness.
- I was surprised by his rudeness.

私は彼の無礼さに驚いた。