IPA: /ˈnɪɡəl/
KK: /ˈnɪgəl/
To worry or be concerned about small, unimportant things.
She tends to niggle over the details of her work instead of focusing on the bigger picture.
Past: niggled
Past Participle: niggled
A small or minor worry, complaint, or annoyance that is often not very important but still bothers someone.
She had a niggle about whether she had made the right decision.
Niggle originates from the late 19th century, possibly from the dialectal term 'niggle' meaning to fuss or to be overly concerned about trivial matters. The exact etymology is uncertain, but it reflects a sense of worry or annoyance over small details.
Think of someone who is overly concerned or 'fussing' about little things — that's what niggle means.