"delicious," 1899, from baby talk. Yum-yum as an exclamation of pleasure is recorded from 1878.
updated on April 24, 2005
英语词源词典收录了45867条英语词源词条，基本涵盖了全部常用英语词汇的起源、历史，是研究英语词汇或通过词源学英语的必备工具。