niggle

v 1 [I, Ipr] ~ (about/over sth) give too much time and attention to unimportant details; criticize in a petty way 过分为琐事费时及操心; 挑剔: Stop niggling about every penny we spend. 别再为我们花的每个小钱费心思了. 2 [Tn] irritate (sb) in a minor way; annoy 惹（某人）不痛快; 惹恼: His untidiness constantly niggled her. 他邋邋遢遢总惹她讨厌.

nicely, niceness, nicety, niche, nick, nick-nack, nickel, nickel silver, nickname, nicotine, niece, niff, niffy, nifty, Nigeria, Nigerian, niggard, niggardliness, niggardly, nigger, niggling, nigh, night, night after night, night and day, night porter, night safe, night shift, night-bird, night-blindness, night-club, night-gown, night-life, night-light, night-line, night-long, night-school, night-shirt, night-soil, night-staff,