quibble
1. [ verb ] argue over petty things
Synonyms: bicker pettifog squabble brabble niggle
Examples:

"Let's not quibble over pennies"

Related terms: argue bicker carper quibbler
2. [ verb ] evade the truth of a point or question by raising irrelevant objections
Related terms: hedge
3. [ noun ] an evasion of the point of an argument by raising irrelevant distinctions or objections
Synonyms: quiddity cavil
Related terms: evasion cavil