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Boring: argue, quarrel

• I wish you two would stop quarreling.

Use: bicker or squabble 

• I wish you two would stop bickering.
• bicker in a song:
• squabble in a song:

Note that bicker and squabble often appear with about/over and are used to refer to quarreling about something unimportant. To see Ngram (bicker, squabble) click here.