Translation of "Voluntarily" in Japanese

- He is voluntarily supporting you.
- He's supporting you voluntarily.

彼はあなたをすすんでサポートします。

He is voluntarily supporting you.

彼はあなたをすすんでサポートします。

He voluntarily helped his mum clean.

彼は、自発的にママの掃除を手伝った。

- I did it willingly.
- I did it of my own free will.
- I did that voluntarily.

進んでそれをやりました。