How to say "Do" in Japanese

When translating "do" into Japanese, you must choose carefully between する and 〜てしまう. In Japanese, する (する (suru)) is typically associated with "to do, to make" (Syllabus Level: N5) and represents A very versatile verb. Polite form is します. On the other hand, 〜てしまう (〜てしまう (te shimau)) maps to "to do completely; to do regrettably/unintentionally" (Syllabus Level: N3) and represents Expresses either the completion of an action, often implying 'finished doing,' or an action done unintentionally or regrettably. In casual speech, it's often shortened to 〜ちゃう/〜じゃう. A literal translation of "do" can often sound unnatural to native Japanese speakers if mixed up!