専念する · noun or participle which takes 'suru'
| Form | Positive | Negative |
|---|---|---|
| Dictionary | 専念する | 専念しない |
| Polite | 専念します | 専念しません |
| Past polite | 専念しました | 専念しませんでした |
| Past | 専念した | 専念しなかった |
| Te-form | 専念して | 専念しないで |
| Desire | 専念したい | 専念したくない |
| Potential | 専念できる | 専念できない |
| Passive | 専念される | 専念されない |
| Causative | 専念させる | 専念させない |
| Causative passive | 専念させられる | 専念させられない |
| Volitional | 専念しよう | |
| Polite volitional | 専念しましょう | |
| Imperative | 専念しろ | 専念するな |
| Conditional | 専念すれば | 専念しなければ |
| Tara conditional | 専念したら | 専念しなかったら |
noun, noun or participle which takes 'suru', intransitive verb
devote oneself; concentrate on; be absorbed in
Used with に to indicate the activity or goal one is fully focused on. Often implies single-minded dedication.
彼は研究に専念している。
He is devoting himself to his research.
I want to concentrate on work right now.
He quit his job in order to devote himself fully to his treatment.
After retiring, the professor now lives a life devoted entirely to research.
She quit her job and decided to devote herself entirely to raising her children.
専念する means to devote oneself exclusively to one thing, while 従事 simply means to be engaged in an activity without implying exclusivity.
専念 means devoting oneself single-mindedly to one thing, while 注力 can describe splitting or allocating effort across multiple priorities.
専念する is a formal, written word meaning to concentrate solely on something, whereas 打ち込む is more colloquial and conveys passionate, energetic devotion.