When people bicker, they argue or quarrel about unimportant things. I went into medicine to care for patients, not to waste time bickering over budgets as states bicker over territory He is still bickering with the control tower over admissible approach routes. = squabble + bickering bick·er·ing The election will end months of political bickering. to argue, especially about something very unimportant (bicken )