Correct

漫不经心

/ màn bù jīng xīn / 
Strokes

Definition

careless/heedless/absent-minded/indifferent

Example

Definition

be careless (about); be casual; be negligent

1
Mànbùjīngxīn
漫不经心
dì
地
shuō
说

speak in a careless/offhand way