upset
词根词缀：
inset v. 插入
in 进入 + set 放，安置 → 放进去 → 插入
reset v. 重放
re 重新 + set 放，安置 → 重放
settle v. 固定；安居
sett〔= set〕放，安置 + le 表动词 → 放好 → 固定
unsettle v. 使…不安宁
un 不 + settle 固定；安居 → 无法安置 → 使…不安宁
upset v. 打翻
up 向上 + set 放，安置 → 翻个底儿朝天 → 打翻
upset adj. 弄翻的；不安心的
upset n. 翻倒；心烦意乱
数据来源：新东方英语词汇速记大全
相关例句：
She warned me not to say anything to upset him
她警告我不要说任何让他不高兴的话。
A girl he knew had upset him by commenting on his increasing girth.
他认识的一位女孩对他越来越粗的腰身说三道四，这让他心里很不痛快。
She sounded upset when I said you couldn't give her an appointment
我告诉她你不能安排与她会面时，她的声音听上去有些沮丧。
House prices are easily upset by factors which have nothing to do with property.
房价很容易受到与房产毫不相干的因素的干扰。
He excused himself on the pretext of a stomach upset
他借口自己胃不舒服离开了。
You have a lot of people that are very upset with what happened.
有很多人对所发生的事感到很不安。