niggle - definition and synonyms

verb [intransitive/transitive] 

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/ˈnɪɡ(ə)l/
present tense
I/you/we/theyniggle
he/she/itniggles
present participleniggling
past tenseniggled
past participleniggled
  1. 1
    British to worry or annoy someone slightly but continuously

    Something was niggling him.

    niggle at:

    Doubts continued to niggle at her.

  2. 2
    to argue with someone or criticize them about something unimportant

    Stop niggling, will you!