常ならず

プログレッシブ和英中辞典(第３版)の解説

つねならず【常ならず】

• 彼は常ならず早々と退社した
  He quit work early, which was very unusual [unlike him].
• 物静かな彼が常ならず興奮してこぶしでテーブルをたたいた
  He wasn't his usual calm and collected self when he pounded his fist on the table.

出典｜小学館