Correct

老不正经

/ lǎo bù zhèng jīng /
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/老不正经-Chinese-idioms-Cchatty-af218a97-c1cf-4c26-a8a0-1b569b6ee537-1612777965.jpg

Collocation

1
老不正经的家伙
2
老不正经的东西
3
笑话……(某人)老不正经
4
真是个老不正经
5
别老不正经了

Definition

老不正经

Literally means:

old debauchery

Actually means:

It refers to an indecent old person. It carries a connotation of criticism or ridicule. Derogatory

指年老而行为越出常规的人。含批评或嘲笑意味。具有贬义色彩。

Example

Used as predicative, object or attributive. (作谓语、宾语、定语)
1
dōu
jīng
已经
shí
五十几
suì
le
hái
zhème
这么
lǎo
zhèngjīng
正经
de
  
,
lǎoshi
老是
huan
喜欢
piàoliang
漂亮
niang
姑娘
zài
一起
  

He's in his 50s and he's so old and he always likes to be with beautiful girls.

2
zài
yīnwǎng
因特网
shàng
gōng
提供
xīn
心理
xún
咨询
  
,
zěnme
怎么
shì
lǎo
zhèngjīng
正经
de
dōng
东西
ne
  
?

I provide psychological counseling on the Internet, how do you call me an old-timer?

3
lǎo
老爸
xiǎng
zhǎo
lǎobàn
老伴
一起
gòng
共度
wǎnnián
晚年
  
,
dàn
biéren
别人
shuō
shì
lǎo
zhèngjīng
正经
  
,
zhí
一直
gǎn
zhǎo
  

My father wants to find an old partner to spend old age together, but afraid that others say he is old and untruth, has been afraid to look for.