keenly
意味
- 鋭く,激しく
- 鋭敏に
- 熱心に
語源
英語の原文（Wiktionary）
From Middle English kenely, kenliche, from Old English cēnlīċe (“keenly, boldly, courageously”), equivalent to keen + -ly. Cognate with Saterland Frisian köinlik (“boldly”), archaic German kühnlich (“bravely”).