Correct

夸海口

/ kuā hǎi kǒu /
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/夸海口-Chinese-idioms-Cchatty-37a7bd8a-0999-4906-9065-f3e4b93eff5b-1612776879.jpg

Collocation

1
夸海口的人
2
不敢夸海口
3
爱夸海口
4
向/跟/对某人夸海口
5
夸下(了)海口

Definition

夸海口

Literally means:

boast with a sea mouth

Actually means:

It figuratively means bragging at will. It usually connotes that one boasts about what he is incapable of. Usually derogatory.

比喻随意说大话。多指做不到的事情却说自己能做到。多具有贬义色彩。

Example

Used as predicate, object, attributive or subject and it can have other words in between. (作谓语、宾语、定语、主语,中间可加入其他词语)
1
Jǐnguǎn
尽管
jīng
已经
kuā
xià
le
hǎikǒu
海口
  
,
shuō
néng
bāng
men
我们
bàn
chéng
zhè
jiàn
shì
  
,
dàn
shǐzhōng
始终
gǎn
xiāngxìn
相信
  

Although he had boasted that he could help us with it, I couldn't believe it.

2
rán
既然
gǎn
敢于
kuā
hǎikǒu
海口
  
,
fáng
不妨
ràng
shì
shì
  
,
shuōbudìng
说不定
zhēn
néng
de
diànnǎo
电脑
xiūhǎo
修好
ne
  

Since he dares to boast, you might as well let him try it, maybe he can really fix your computer.

3
shi
kuā
hǎikǒu
海口
de
rén
  
,
bàn
le
de
shìqing
事情
  
,
juéduì
绝对
huì
不会
bǎopiào
保票
  

He's not a boaster, he can't do anything, he's never going to give a guarantee.