1. worry unnecessarily or excessively;

   "don't fuss too much over the grandchildren--they are quite big now"
   

2. argue over petty things;

   "Let's not quibble over pennies"
   

1.(长时间地)使不安，使烦恼
If somethingniggles you, it causes you to worry slightly over a long period of time.

e.g. I realise now that the things which used toniggle and annoy me just don't really matter...
我现在意识到那些曾令我烦恼不快的事情其实无关紧要。
e.g. It's been niggling at my mind ever since I met Neville in Nice...
自从在尼斯见到内维尔后，我一直忐忑不安。

2.对…吹毛求疵;挑剔
If someoneniggles you, they annoy you by continually criticizing you for what you think are small or unimportant things.

e.g. I don't react anymore when opponents try toniggle me...
对手找茬惹我时，我不会再理他们。
e.g. You tend toniggle at your partner, and get hurt when he doesn't hug you.
你往往会对伴侣吹毛求疵，如果他不拥抱你，就感到受了伤害。

1. 拘泥小节：nigger-lover 黑人解放运动者 |niggle 拘泥小节 | niggling 琐碎工作

2. 为琐事费时：niggerhead 块状橡胶 |niggle 为琐事费时 |niggle 为小事过分费心

3. 小气地给：...moreandmore 越来越 | ...niggle 小气地给 | ...outbrave 勇敢地面对

4.

4. 为小事过分费心：niggle 为琐事费时 |niggle 为小事过分费心 |niggle 拘泥小节