Synonyms for niggle

Verb

1. fuss, niggle, fret, worry

usage: worry unnecessarily or excessively; "don't fuss too much over the grandchildren--they are quite big now"

2. quibble, niggle, pettifog, bicker, squabble, brabble, argue, contend, debate, fence

usage: argue over petty things; "Let's not quibble over pennies"