irresponsibly
無責任に
解説 Definition
責任を持たない方法で、または責任感なく行動すること。義務や役割を果たさずに無責任に行う。
Irresponsibly means in a way that shows a lack of care, judgment, or duty. It is used when someone acts without thinking enough about the results or possible harm. The word often describes behavior involving money, safety, or authority.
覚え方のコツ Memory Tip
まず responsible「責任ある」が土台。先頭に ir- が付くと否定になって irresponsible「無責任な」、さらに -ly で副詞化して「無責任に」。形で覚えると一気につながります。responsibly と対で押さえるのが効果的で、behave irresponsibly, spend money irresponsibly, drive irresponsibly のように「行動のしかた」を説明するときに使います。carelessly は「不注意に」で、責任感の欠如まで含む irresponsibly のほうが非難の度合いが強めです。
Think of the word family: `responsible`, `irresponsible`, `irresponsibly`. The prefix `ir-` makes it negative, and `-ly` turns it into an adverb. It often appears with actions like `drive irresponsibly` or `spend irresponsibly`, which helps fix the form in memory.
例文
He spent his inheritance irresponsibly.
彼は無責任に相続財産を使い果たした。
The company acted irresponsibly by ignoring safety regulations.
会社は安全規制を無視することで無責任に行動した。
She irresponsibly left the children unsupervised.
彼女は無責任に子供たちを監督なしで置いた。
irresponsibly の類義語・関連語
irresponsibly の語源・成り立ち Etymology
irresponsibly は ir-「否定」+ responsible + -ly で、文字どおり「責任を負わない形で」です。responsible はフランス語を経てラテン語 respondere「答える・引き受ける」にさかのぼるため、「自分の行為に答えないように」が無責任にへつながります。関連語は respond, response。
Irresponsibly is formed from ir- "not," responsible, and -ly. Responsible came through French from Latin respondere, meaning "to answer" or "to answer for." The idea moved from answering for your actions to duty and accountability, so irresponsibly means in a way that does not answer for consequences. Related words include respond and response.
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