sotto
Doing something with great care and gentleness, trying not to disturb. A tender, delicate action.
💡Placing a sleeping baby down — 'I sotto put the baby in the crib.'
眠っている赤ちゃんをそっと布団に置いた。
I sotto gently placed the sleeping baby in the futon.
I ___ gently placed the sleeping baby in the futon.
眠っている赤ちゃんを○○布団に置いた。