Translation guide
The adverb 'tirelessly' describes doing something with great energy and persistence, without showing signs of fatigue. In Japanese, this concept is often expressed through adverbs, adverbial phrases, or idiomatic expressions that emphasize continuous effort, diligence, or lack of weariness.
To describe someone who works or strives continuously with great energy and persistence, without showing fatigue.
This adverb means 'energetically' or 'vigorously' and is the most common and natural way to express 'tirelessly' when referring to working hard on a task or project.
He worked tirelessly on the project.
Literally 'without knowing fatigue', this phrase emphasizes the lack of tiredness. It is slightly more literary but still common.
She continued working tirelessly.
Means 'without resting'. It emphasizes continuous action without breaks, often used in formal or written contexts.
They carried out relief efforts tirelessly.
An onomatopoeic adverb meaning 'diligently' or 'busily'. It conveys a sense of working steadily and persistently, often in a humble or everyday context.
He works tirelessly every day.
An idiomatic expression meaning 'sparing no effort' or 'without sparing oneself'. It is more emphatic and often used in formal or written language to praise someone's dedication.
He worked tirelessly, sparing no effort.
To describe someone who continues an activity or effort persistently over time, without giving up.
An adverb meaning 'untiringly' or 'persistently'. It is often used in formal or literary contexts to describe long-term dedication.
He continued his research tirelessly.
A more emphatic and literary version of 'たゆまず', meaning 'without tiring or slackening'. It is used in formal writing or speeches.
To describe someone who does something with continuous energy and enthusiasm, often in a positive, uplifting manner.
Means 'without getting tired of' or 'insatiably'. It emphasizes that the person never loses interest or enthusiasm.
He tirelessly seeks new knowledge.
精力的に focuses on the energetic nature of the action, while 疲れを知らずに emphasizes the absence of fatigue. 精力的に is more common in everyday speech and writing.
Do not translate 'tirelessly' literally as 疲れなく (without getting tired) or 疲れないで (without getting tired). These are grammatically incorrect or unnatural in this context.
He made tireless efforts.