Correct

绿帽子

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Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/绿帽子-Chinese-idioms-Cchatty-7a841f3a-cbb8-4ebf-88ae-f87a1ea64657-1612777946.jpg

Collocation

1
戴上绿帽子
2
戴了一顶绿帽子
3
戴绿帽子

Definition

绿帽子

Literally means:

a green hat

Actually means:

man whose wife has an ex-marital affair

绿帽子 means green scarf. It figuratively means a man whose wife has an illegitimate relation with another man. During Yuan and Ming Dynasties, men from the families of prostitutes had to wear green scarves to mark their inferior status. Later people refer to man whose wife had an illegitimate affair as one wearing a green hat. Derogatory.

即绿头巾,比喻妻子有外遇的男子。元朝和明朝规定,娼妓家中的男子戴绿头巾,以表示其男人说成戴绿帽子。具有贬义色。有外遇的。

Example

Used as object. (作宾语)
1
ge
那个
rén
女人
shi
shénme
什么
zhèngpài
正派
de
rén
  
,
zǒngshì
总是
gěi
zhàngfu
丈夫
màozi
绿帽子
  

The woman is not a good person, always give her husband a green hat.

2
shǎo
不少
rén
ànli
暗地里
xīn
lái
de
zǒngjīng
总经理
jiàozuò
叫做
màozi
绿帽子
xiānsheng
先生
  
,
yuánlái
原来
zhège
这个
zhíwèi
职位
shì
yòng
màozi
绿帽子
huàn
lái
de
  

Many people secretly called the new general manager Mr. Green Hat, and it turned out that his position was exchanged for a green hat.

3
Chúle
除了
shāzhīqiú
杀父之仇
  
,
zhōngguó
中国
nánrén
男人
zuì
不可
róngrěn
容忍
de
shì
kǒng
恐怕
jiùshì
就是
dàimàozi
戴绿帽子
le
  

In addition to the feud of killing his father, the most intolerable thing for Chinese men is probably to wear a green hat.