acuteness
鋭さ
解説 Definition
心や感覚の鋭さや敏感さを示す名詞です。また、病気や痛みなどの激しさや深刻さを指すこともあります。
Acuteness is the quality of being very sharp, strong, or clear. It can describe physical sharpness, such as pain or sound, and it can also mean quick and accurate understanding in thinking or noticing things.
覚え方のコツ Memory Tip
acute を知っていればまず取れる語。acute は acute angle（鋭角）や acute pain（激しい痛み）で出る「鋭い・深刻な」。そこに -ness が付いて「その鋭さという性質」になる。人なら acuteness of mind / observation で観察眼や理解の鋭さ、症状なら the acuteness of pain / illness で痛み・病気の激しさ。sharpness よりやや知的・医学的な文脈で見やすく、accuracy「正確さ」と混同しないのがコツ。
Start with `acute`, a common word in `acute pain` or `acute angle`. Add `-ness`, and it becomes the quality of being acute. It often appears in phrases like `acuteness of mind` or `acuteness of pain`, so connect it with sharp thinking or intense symptoms. Do not mix it up with `accuracy`, which is about being correct.
例文
His mental acuteness impressed everyone.
彼の頭の切れのよさはみんなを感心させた。
The acuteness of pain after surgery made recovery difficult.
手術後の痛みの激しさは回復を困難にした。
Her acuteness of perception was remarkable.
彼女の知覚の鋭さは際立っていた。
acuteness の類義語・関連語
派生語
acuteness の語源・成り立ち Etymology
acuteness は acute に古英語由来の名詞化接尾辞 -ness が付いた語。acute はラテン語 acutus「鋭い」にさかのぼり、語根 acu- は「尖らせる」。だから物の鋭さだけでなく思考の鋭敏さも表し、関連語に acute, acumen がある。
Acuteness is formed from acute and the noun ending -ness. Acute comes from Latin acutus, meaning sharp or pointed, from a root referring to a point or sharpness; the same root appears in acumen. Because of that history, the word came to describe not only physical sharpness but also sharp thought or perception.
外部辞書で調べる
この単語を英単語クイズで覚えよう