プログレッシブ和英中辞典(第３版)の解説
ふてき【不敵】
不敵な｜fearless; dauntless
- 彼は勇敢で不敵な男だ
He is courageous and daring [fearless／dauntless]. - 不敵な面構えで私を見た
He looked at me with 「an audacious [an insolent／a defiant] expression (on his face).