When you bicker, you argue in a petty way, like two kids squabbling in the backseat on a long car trip, or politicians taking cheap shots at each other but avoiding discussion of important issues.
It’s impossible to bicker in a dignified way, as the word always suggests pettiness and an unpleasant experience for anyone within earshot. If, for instance, you’ve listened for years to your ill-tempered aunt from Boise bicker with your uncle from Dubuque over how the Thanksgiving turkey should be carved, you might want to book a trip to Tierra del Fuego and avoid the holiday altogether.
argue over petty things
a quarrel about petty points