›a small doubt or worry: Don't you feel even a slight niggle about the morality of your experiments?Suspecting and questioningQuestioning people and asking questions in generalCuriosityAnxiety and worry - general wordsFear and phobiasniggling
/-l̩.ɪŋ//-lɪŋ/adjective[before noun]›a niggling doubt/feara niggling comment/criticismAnnoyingCausing anxiety and worryMaking people sad, shocked and upset