nub
要点
覚え方のコツ Memory Tip
nub はもともと「小さなこぶ・塊」を表し、そこから議論の中心に残る硬い「核心・要点」へ比喩的に広がりました。the nub of the issue や the nub of the argument という定型表現で覚えると実用的です。main point より簡潔でややくだけた響きがあり、問題の本質を短く示す場面に向きます。
Picture a small, hard lump at the center of something. That concrete image reflects the older physical sense of nub and leads naturally to the figurative meaning “the essential point.” Learn the fixed phrase “the nub of the issue,” as in “The nub of the issue is cost.” You can also say “the nub of the argument.” Compared with main point, nub is shorter, slightly informal, and often suggests that unnecessary details have been stripped away until only the central difficulty or truth remains. Do not confuse it with nib, the pointed writing end of a pen.
nub の類義語・関連語
nub の語源・成り立ち Etymology
中低地ドイツ語 knubbe（こぶ、塊）が語源で、小さく突き出た塊を指した。関連語に knob（取っ手）、knubby（節のある）がある。物事の核心にある小さな塊というイメージから「要点・核心」という比喩的意味が生まれた。
Nub originally referred to a small lump, knot, or projecting piece. It is generally connected with a group of Germanic words for knobs and rounded lumps, including Middle Low German knubbe. The exact path into English is not fully certain, so the safest connection is the shared physical image rather than a more detailed claim. The figurative sense “essential point” developed from the idea of a small, solid core remaining at the center of a subject or argument.
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