Something that was not expected; unforeseen. Indicates a result or event that differs from expectations.
彼の辞任は本当に予想外だった。
His resignation was truly unexpected.
試験は予想外に難しく、合格できなかった。
The exam was unexpectedly difficult, and I couldn't pass.
その知らせは予想外で、しばらく言葉が出なかった。
The news was unexpected, and I was speechless for a while.