to worry a lot about something
何かについてとても心配する (nanika ni tsuite totemo shinpai suru)
"Don’t lose sleep over minor issues."
"小さな問題で眠れなくならないで。" (chiisana mondai de nemurenaku naranaide)
to stop being involved in or responsible for something
Very quickly, almost instantaneously.
to focus closely on something
to commit an illegal act
to achieve something gradually and steadily
to become willing to share thoughts or to start operating
