on principle
信念に基づいて
解説 Definition
「on principle」は、自分の信念や原則に基づいて行動することを示す表現で、特に妥協したくないときに使われる。理屈や感情よりも長年の信条や倫理観を重視して決断したい場面で用いられ、行動の正当性を強調できる。
On principle means because of a personal rule, belief, or moral standard, rather than for practical reasons. It is used when someone decides to do or refuse something because they believe it is the right thing. The phrase often suggests a firm and consistent attitude.
覚え方のコツ Memory Tip
principle はまず単体で「原則・信条」と押さえ、on principle は『その原則の上に立って判断する』とイメージすると残りやすいです。利益や気分ではなく、自分のルールを優先するときの表現で、特に拒否や妥協しない場面で出やすいのが記憶のフックです。I don't do that on principle. のように『主義としてそうしない』の形で覚えると実戦的。as a matter of principle と近い一方、principal は「校長・主要な」で別語なので綴りを混同しないこと。
Focus on principle as a rule or basic idea. On principle can be remembered as based on a principle or as a matter of principle. Be careful not to mix it up with in principle, which is much more common, or with principal, which is a different word.
例文
He refused the gift on principle.
彼は信念に従って贈り物を辞退した。
I don't lend money on principle, even to close friends.
親しい友達でも、原則としてお金は貸さない。
on principle の類義語・関連語
on principle の語源・成り立ち Etymology
principleはラテン語principium(始まり・根本)から。princeps(第一の者)が語源で、prince(王子)と同根。「on principle」は「根本の信念に基づいて」が原義で、行動の根拠が損得でなく信条にあることを示す。
The central word here is "principle," from Latin "principium," meaning "beginning," "foundation," or "basic rule." It is related to "princeps," meaning "first," which is also the source of English "prince." So "on principle" developed the sense of acting from a basic belief or rule, not from convenience or profit.
外部辞書で調べる
この単語を英単語クイズで覚えよう