niggling
adj
1 too unimportant to give time or attention to; trifling 不值得費(fèi)時(shí)或操心的; 無(wú)關(guān)緊要的; 瑣碎的
Don't waste time on niggling details. 不要為瑣事浪費(fèi)時(shí)間.
2 annoying in a minor but persistent way 令人煩惱的, 討厭的(事不大但不斷)
a niggling pain 煩人的疼痛
niggling criticism 惱人的批評(píng).