Correct

退落

/ tuì luò / 
Strokes

Definition

to subside

Example

As a Verb

recede; ebb

1
Cháoshuǐ
潮水
tuìluò
退落
le
了
  
。

The tide has receded. / The tide is at the ebb. / The tide is out.

As a Verb

decline; be on the wane