プログレッシブ和英中辞典(第4版)の解説
あんがい【案外】
〔思いがけなく〕unexpectedly；〔驚いたことに〕surprisingly ⇒いがい（意外）
試験は案外難しかった［易しかった］
The examination was harder [easier] than I had expected.
案外な結果だった
The results were surprising.／We were surprised at the results.
利益は案外少ない
The profit will be much less than you think.