So why is there a little niggle at the back of my mind?
那为什么我潜意识里会有一丝不安呢?
2VERB 对…吹毛求疵;挑剔 If someone niggles you, they annoy you by continually criticizing you for what you think are small or unimportant things. 对…吹毛求疵;挑剔 [mainly British]
I don't react anymore when opponents try to niggle me. [VERB noun]
对手找茬惹我时,我不会再理他们。
You tend to niggle at your partner, and get hurt when he doesn't hug you. [VERB + at]