yessum
/ˈjesəm/exclamation
- US dated, chiefly black English used as a polite form of assent addressed to a woman〈美, 旧, 主黑人英语〉［对女子表示赞同的礼貌说法］是的, 夫人（或小姐）：
'You feel all right?' she asked. 'Yessum.'
“你没事吗？”她问道。“是的, 夫人。”
词源
early 20th cent.: alteration of yes ma'am.