Correct

说漏嘴

/ shuō lòu zuǐ / 
Strokes

Definition

to blurt out/to let slip

Example

As a Verb

blurt out (the truth/secret); let slip (the truth/secret)

1
Tā
他
zhǐshì
只是
shuō
说
lòuzuǐ
漏嘴
le
了
  
,
nǐ
你
bù
不
yīnggāi
应该
zéguài
责怪
tā
他
  
。

This was only a slip of the tongue. You shouldn't have blamed him.