was taken aback, was bewildered
彼女の理屈には全く面食らった。
I was completely taken aback by her logic.
突然の計画変更に面食らった。
I was caught off guard by the sudden change of plans.
私は少し面食らった。
I was a little taken aback.
彼女の突然の訪問に私は面食らった。
I was taken aback by her sudden visit.
ウォルターはジョンのひどい侮辱に面食らった。
Walter was taken aback by John's terrible insult.