Niggle has 4 different meanings across 1 category:
Verb
Noun
1
A minor complaint or problem.
Verb
1
worry unnecessarily or excessively
"don't fuss too much over the grandchildren--they are quite big now"
2
argue over petty things
"Let's not quibble over pennies"
3
To trifle with; to deceive; to mock.
Broader Terms (hypernyms)
Narrower Terms (hyponyms)