Correct

端的

/ duān de / 
Strokes

Definition

really/after all/details/particulars

Example

As an Adverb

indeed; really; sure enough

1
Tā
他
duān
端
de
的
zài
在
cǐ
此
  
。

He is here as we presumed. / Sure enough, he is here.

As an Adverb

actually; exactly

2
Zhè
这
rén
人
duān
端
de
的
shì
是
shuí
谁
  
?

Who on earth is this man?

As a Noun

ins and outs (of a matter); details

3
Dǎting
打听
  
/
xìwèn
细问
duān
端
de
的

inquire about the details (of a matter)

4
Bù
不
zhīduān
知端
de
的

know nothing about the ins and outs of the matter