好词典
soundly
UK //ˈsaʊndli//US //ˈsaʊndli//
词源
源自中古英语 'soundli'，由 'sound'（健康的、完好的）加上副词后缀 '-ly' 构成，最初表示“健康地”或“稳固地”，后引申为“彻底地”或“熟睡地”。
adverb
❶ 表示睡得很熟、很安稳，通常用来形容睡眠质量非常好，没有被打扰。
“The baby slept soundly through the night.”
（宝宝整晚都睡得很香。）
“After the long hike, he fell soundly asleep as soon as he lay down.”
（长途徒步后，他一躺下就沉沉地睡着了。）
❶ 表示彻底地、完全地，常用于描述击败、打败或解决某事的方式。
“Our team defeated their opponents soundly in the final match.”
（我们队在决赛中彻底击败了对手。）
“The proposal was soundly rejected by the committee.”
（提案被委员会彻底否决了。）
同义词:deeply, thoroughly, completely, heavily, firmly
常见短语
sleep soundly — 形容睡得很熟、很安稳，通常指不受干扰的深度睡眠。
“With the window closed, she could sleep soundly without any noise.”
（关上窗户后，她可以不受噪音干扰，安稳入睡。）
defeat soundly — 指彻底击败对手，通常用于比赛、辩论或竞争场景。
“The home team defeated their rivals soundly with a score of 5-0.”
（主队以5比0的比分彻底击败了对手。）