1) Argue over trifles 2) Be overly critical 3) Carp about details 4) Cavil 5) Criticise 6) Criticize 7) Criticize minor details 8) Criticize the minutiae 9) Criticize the small stuff 10) Find a few faults 11) Find tiny faults 12) Go after little things 13) Knock 14) Make tiny criticisms 15) Not be satisfied 1) Carp 2) Cavil 3) Delouse 4) Equivocate 5) Findfault 6) Niggle 7) Pettifog 8) Protest 
[v] - be overly critical
to be excessively concerned with or critical of inconsequential details.