HSK 5 HSK V4
Correct

万一

/ wàn yī /
Strokes

Definition

just in case/if by any chance/contingency

Example

As a Conjunction

just in case; if by any chance

1
Dài
shàng
雨衣
  
,
fángwàn
以防万一
xià
下雨
  

Take the raincoat just in case it rains.

2
Wàn
万一
yǒu
jǐn
紧急
qíngkuàng
情况
  
,
qǐng
àn
hóng
红色
ànniǔ
按钮
qiēduàn
切断
diànyuán
电源
  

Should there be any emergency, please press the red button to cut off the electricity.

3
Wàn
万一
dào
shíhòu
时候
zàijiā
在家
  
,
jiù
qǐng
zhàogu
照顾
de
háizi
孩子
men
  

Just in case I'm not back, please take care of my children.

As an Adverb

what if

4
Wàn
万一
zhè
chuánwén
传闻
shì
shìshí
事实
ne
  
?

What if the rumour is true?

As a Noun

contingency; eventuality

5
Fángbèi
防备
wàn
万一

be ready for all eventualities; be prepared for the worst

As a Noun

one ten-thousandth; very small percentage

6
笔墨
néng
xíngróng
形容
wàn
万一
  

It's simply beyond description.