unawares
01
無意識に, 故意でなく
without forethought or plan; inadvertently
02
不意に, 突然
suddenly and unexpectedly
例
The sudden question caught him unawares, and he struggled to respond.
突然の質問に彼は不意をつかれ、返答に苦労した。
She was taken unawares by the unexpected change in plans.
彼女は予期せぬ計画の変更に不意を突かれた。
