impulsively
衝動的に
解説 Definition
深く考えずに、突然の衝動に従って行動すること。理性的な判断を伴わない振る舞い。
Impulsively means acting suddenly, based on an immediate feeling rather than careful thought. It is commonly used when someone makes a decision quickly, especially in shopping, speaking, or behavior. The word often suggests a lack of planning or self-control.
覚え方のコツ Memory Tip
impulse（衝動）→ impulsive（衝動的な）→ impulsively（衝動的に）の3段階で固めると覚えやすいです。まず名詞 impulse を軸にし、-ive で「そういう性質のある」、-ly で「どのように行動するか」を表す副詞になると整理します。buy impulsively, react impulsively のように「買う・反応する」を修飾しやすい語。carefully / deliberately の反対側に置くと、考える前に動く感じが定着します。
Build it in three steps: impulse, impulsive, impulsively. The word often appears with actions like buy, react, or decide, so it gives the feeling of acting before thinking. Remember it as the opposite of carefully or deliberately.
例文
She impulsively quit her job without another position lined up.
彼女は衝動的に、次の仕事が決まらないまま仕事を辞めた。
He impulsively bought an expensive car on a whim.
彼は気まぐれで高級車を買った。
Acting impulsively often leads to regrettable decisions.
衝動的に行動することはしばしば後悔する決定につながる。
impulsively の類義語・関連語
impulsively の語源・成り立ち Etymology
impulsivelyはラテン語in-「中へ」+ pellere「押す、駆り立てる」から生じたimpulseに、-iveと-lyが重なった語です。内側からぐいと押される感覚が核にあるので、「よく考えず衝動的に」の意味が語源どおりに見えてきます。関連語はcompel、propel。
This word is built from impulsive + -ly. Impulsive comes from impulse, from Latin impulsus, based on impellere, meaning "to push" or "drive on" from in- "into" and pellere "to push." The core image is of something pushing from within, which led to the modern sense of acting suddenly without much thought. Related words include compel and propel.
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