Correct

无底

/ wú de /
Strokes

Definition

bottomless

Example

As an Adjective

bottomless; unfathomable; abysmal

1
de
无底
shēnyuān
深渊

bottomless abyss/pit

As a Verb

feel uncertain/unsure about;

2
Xīnzhōng
心中
de
无底

be not sure about

Related

无底洞