Without a murmur.
Early 19th century; earliest use found in Ebenezer Elliott (1781–1849), poet and bar-iron merchant. From murmur + -less.
英语词典包含464360条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。