I. verb — [no obj.] 1. argue about petty and trivial matters • couples who bicker over who gets what from the divorce.
‹literary› (of water) flow or fall with a gentle repetitive noise; patter.
• against the glass the rain did beat and bicker.
3. (of a flame or light) flash, gleam, or flicker. • the restless wheels whose flashing spokes bicker and burn.
II. derivatives bickerer noun
– origin Middle English: of unknown origin.