Translation guide
The English adverb "diligently" describes doing something with careful, persistent effort. In Japanese, this concept is most naturally expressed through specific adverbs, onomatopoeic words, or verb phrases that emphasize steady hard work, attention to detail, and perseverance.
彼は一生懸命働く。
He works diligently.
真面目に勉強しなさい！
Study diligently!
To describe someone putting in consistent, earnest effort over time, often in work or study.
The most common and versatile word for doing something with all one's might. It implies giving one's best effort, often with a sense of earnestness. Suitable for both spoken and written contexts.
彼は一生懸命勉強した。
He studied diligently.
一生懸命働きます。
I will work diligently.
Means 'enthusiastically' or 'zealously'. It emphasizes passion and dedication, often used when someone is deeply engaged in an activity.
彼女は熱心にピアノを練習している。
She practices the piano diligently.
Means 'seriously' or 'earnestly'. It implies a sincere, no-nonsense approach to a task. Often used for studying or working responsibly.
真面目に仕事をしなさい。
Do your work diligently.
An onomatopoeic adverb meaning 'busily' or 'diligently', often implying steady, repetitive effort without complaint. Common in casual speech.
彼はせっせとお金を貯めている。
He is diligently saving money.
To emphasize meticulousness, thoroughness, and precision in carrying out a task.
Means 'carefully' or 'elaborately', with a focus on thoroughness and attention to detail. Often used for preparations, cleaning, or checking work.
彼は念入りに書類をチェックした。
He diligently checked the documents.
Similar to 念入りに, but often implies painstaking effort and patience, especially in craftsmanship or research.
職人が丹念に家具を作る。
The craftsman diligently makes furniture.
An onomatopoeic adverb meaning 'steadily' or 'ploddingly'. It emphasizes persistent, step-by-step effort, often in studying or saving money.
To highlight continuous effort over a long period, often in the face of difficulty.
Means 'steadily' or 'in a down-to-earth manner'. It implies humble, persistent effort without seeking attention, often leading to gradual progress.
彼は地道に研究を続けた。
He diligently continued his research.
Means 'tenaciously' or 'persistently'. It emphasizes not giving up and sticking with a task despite challenges.
粘り強く交渉した。
They negotiated diligently.
一生懸命 emphasizes maximum effort and energy, while 真面目に emphasizes seriousness and sincerity. Use 一生懸命 when you want to convey 'giving it your all', and 真面目に when you mean 'not fooling around' or 'taking it seriously'.
There is no single Japanese adverb that covers all nuances of 'diligently'. Using a direct translation like 勤勉に (きんべんに) can sound overly formal or bookish. Instead, choose the expression that best matches the specific nuance you want to convey.
チームは締め切りに間に合うように一生懸命働いた。
The team worked diligently to meet the deadline.
一生懸命 conveys the intensity of the effort.
毎日こつこつ勉強することが大切だ。
It's important to study diligently every day.