HSK 5 HSK C3/W3/V4
Correct

/ gēn /
Strokes

Collocation

1
寻根
2
树根
3
祸根
4
耳根子
5
命根子
6
连根拔起
7
一根草
8
一根烟
9
一根筋
10
一根绳子
11
一根黄瓜
12
一根吸管
13
一根竹竿
14
一根棍子
15
一根骨头
16
一根管子
17
一根筷子
18
一根树枝
19
一根木头
20
一根柱子
21
一根火柴
22
一根牙签
23
一根头发
24
一根汗毛

Definition

根 is a Noun, which means[root/basis].

根 also is a  Measure word ,which means[classifier for long slender objects, e.g. cigarettes, guitar strings/radical (chemistry)].

Example

As a Noun.
1
Zhè
shù
de
gēn
hěn
shēn
  

The roots of this tree are very deep.

2
què
的确
shì
ěrgēn
耳根子
ruǎn
  
,
tīng
biéren
别人
shuō
shénme
什么
jiù
rènwéi
认为
shì
duì
de
  
,
diǎn
méiyǒu
没有
自己
de
zhǔjiàn
主见
  

He is indeed soft ears, a listen to what others say, think is right, not at all their own opinion.

3
Zài
zhège
这个
shǒucái
守财奴
xīn
心目
zhōng
  
,
qián
jiùshì
就是
de
mìnggēnzi
命根子
  
,
shuí
dòng
le
de
qián
  
,
jiù
gēn
shuí
pīnmìng
拼命
  

In this Scrooge's mind, money is his life, who moved his money, he with whom desperately.

As a Measure word.
4
Chúfáng
厨房
de
gēn
guǎndào
管道
bàoliè
爆裂
  
,
lòng
de
mǎn
dōu
shì
shuǐ
  

One of the pipes in the kitchen burst and filled the floor with water.

5
Zhè
gēn
guǎizhàng
拐杖
shì
可是
ye
爷爷
de
mìnggēnzi
命根子
  
,
qiè
一切
xíngdòng
行动
dōu
yào
kào
  
,
zěnme
怎么
lòngdiū
弄丢
le
ne
  
?

This crutch is grandpa's life, all actions depend on it, how can you lose it?

6
zhēnshi
真是
shǎogēnjīn
少根筋
  
,
zěnme
怎么
xiàng
xiǎohái
小孩
yàng
一样
  
,
kǎo
考虑
wèn
问题
zhème
这么
jiǎndān
简单
  
?

You are really less rooted, how can you be like a child, thinking about the problem so simple?