Correct

没良心

/ méi liáng xīn /
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/没良心-Chinese-idioms-Cchatty-b772d4a3-efb5-4fe4-bef4-ab4b100eaaf9-1612777609.jpg

Collocation

1
干/做没良心的事
2
说没良心的话
3
没良心的人
4
真是没良心
5
别没良心
6
不能没良心

Definition

没良心

Literally means:

be conscienceless

Actually means:

be beungrateful

良心 refers to the correct understanding of whether one's own behavior is right or wrong, good or bad and whether it is up to the standard of social ethics. This phrase means that somebody is conscienceless or that he lacks a sense of social responsibility or morality.

良心,对自身行为的是非善恶或是否符合道德标准的正确认识。指丢掉或丧失良心,或行为缺乏社会道德责任。

Example

Used as predicate or attributive, and can be used with other words in between. (作谓语、定语,中间可以插入别的词语)
1
xiē
那些
mài
jiǎyào
假药
de
rén
shízài
实在
méiyǒu
没有
diǎn
liángxīn
良心
,
jìngrán
竟然
wèile
为了
zhuànqián
赚钱
ér
hàirén
害人

Those who sell counterfeit medicine really don't have a conscience and go to harm people in order to make money.

2
Xiǎowáng
小王
bu
shì
zhǒng
那种
méi
liángxīn
良心
de
rén
,
duì
xiàng
一向
cuò
不错
,
xiànzài
现在
yǒu
kùnnan
困难
dìng
一定
huì
jìn
尽力
bāng
de

Xiao Wang is not the kind of person without conscience, you have always been good to him, now you have difficulties he will try his best to help you.

3
Jǐnguǎn
尽管
xiànzài
现在
shèhuì
社会
shàng
què
的确
yǒu
xiē
一些
rén
méi
liángxīn
良心
,
xīncháng
心肠
huài
,
dànshì
但是
yǒu
liángxīn
良心
xīncháng
心肠
hǎo
de
rén
háishi
还是
duōshù
大多数

Although there are indeed some people in society who have no conscience and have bad heart, but people with conscience and good heart are still the majority.