fathom out
理解する
解説 Definition
難解な事柄の意味や仕組みを深く理解・解明すること。
To fathom out means to finally understand something difficult after thinking carefully. It is used for problems, situations, or ideas that are not easy to understand at first. This phrase is fairly uncommon and sounds a little informal or old-fashioned.
覚え方のコツ Memory Tip
まず know や understand より一段深く、「表面ではなく中身までのみ込む」理解だと置くと残りやすい。out が付くと「最後まで解き明かす」感じが強まる。会話では I can't fathom it. の形も多く、理由・仕組み・相手の考えなど、すぐには見抜けないものに使う。figure out が「答えを見つける」なら、fathom out は「複雑さの奥まで探って腑に落とす」に近い。難問や不可解な行動と結びつけて覚えると定着しやすい。
"Fathom" is an old word linked to measuring depth, so it suggests going deep, not staying on the surface. "Fathom out" means working through something until you really grasp it. Compare it with "figure out," but with a deeper, harder-to-reach feeling.
例文
I still can't fathom out the logic behind her strange decision.
彼女の奇妙な決断の裏にある理屈が、いまだに理解できない。
Scientists are trying to fathom out the mysteries of the deep ocean.
科学者たちは深海の謎を解明しようとしている。
It took him years to fathom out how the old machine worked.
その古い機械の仕組みを理解するのに彼は何年もかかった。
fathom out の類義語・関連語
fathom out の語源・成り立ち Etymology
fathom は古英語 fæðm「両腕を広げた長さ」が語源で、海の深さを測る単位になった語。見えない深さを測る発想から「理解する」へ広がり、fathom out は複雑さの奥行きを探ってのみ込む感じ。fathomless と unfathomed も同根だ。
Fathom comes from Old English fæðm, meaning the length of two outstretched arms. It became a unit for measuring water depth, so it carried the idea of testing how deep something is. From measuring physical depth, the word later developed the sense of understanding something deep or difficult. Related forms include fathomless and unfathomed.
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