verb
1.
to find fault with something usually on minor grounds
was a peevish critic, always ready to quibble
Synonyms: cavil, chicane, hypercriticize
Related Word: carp, criticize
Idioms: split hairs
Contrasted words: applaud, commend, compliment, recommend; approve, endorse, sanction
2.
Synonyms: argue 2, argufy, bicker, dispute, hassle, squabble, wrangle