Bicker (verb)

1. To argue or dispute in a petty or peevish manner.
2. To make a continuous, low, murmuring sound.

Origin:

From middle english bikkeren, from old english biccere, from bicce, biccere "a kind of bird" (compare old norse bikkjuna "to quiver").

Examples:

1. They bickered over who should pay the bill.
2. The couple bickered constantly.
3. The children bickered over the toys.
4. The meeting devolved into bickering.
5. The bickering between the two departments delayed the project.