soundly
意味
- 健全に,正しく
- 確実に,しっかりと
- ぐっすりと(sound)
- 激しく,したたか
例文
Since I speak the truth, I live soundly at home.
実を言うと、家では僕はちゃんと元気なんだ。
The baby was sleeping soundly in his mother's arms.
赤ちゃんは母親の腕の中でぐっすり眠っていた。
Today was a good day, so I'll sleep soundly tonight.
今日は良い１日だったのでグッスリ眠れそうだ。
語源
英語の原文（Wiktionary）
From Middle English soundly, soundely, from Old English ġesundlīċe (“safely, prosperously, gladly”), equivalent to sound + -ly. Originally meaning "safely", the present sense came in the 16ᵗʰ century.