Niggle - Definition
niggle
v 1: worry unnecessarily or excessively; "don't fuss too much
over the grandchildren--they are quite big now" [syn:
fuss, niggle, fret]
2: argue over petty things; "Let's not quibble over pennies"
[syn: quibble, niggle, pettifog, bicker, squabble,
brabble]