Correct

严紧

/ yán jǐn / 
Strokes

Definition

strict/tight

Example

As an Adjective

strict; rigorous

1
Duì
对
xuésheng
学生
yánjǐn
严紧

be strict with one's students

As an Adjective

tight; close

2
Chuānghu
窗户
hú
糊
de
得
tǐng
挺
yán
严
jǐn
紧
  
。

The windows are tightly sealed.

3
Fángshǒu
防守
yánjǐn
严紧

closely guard