HSK C7-9
Correct

愚

/ yú / 
Strokes

Definition

to be stupid/to cheat or deceive/me or I (modest)

Example

As an Adjective
foolish; stupid
1
Qí
其
zhī
知
kě
可
jí
及
yě
也
  
,
qí
其
yúbùkějí
愚不可及
yě
也
  
。

Others may equal his wisdom, but they cannot equal his stupidity.

2
Yú
愚
ér
而
hǎo
好
zìyòng
自用

be stupid but wilful

As a Verb
make a fool of
As a Pronoun
my; I