Some synonyms for the phrase "flea the ear" include to nag, to pester, to bother, to harass, to harangue and to badger. All of these words suggest an ongoing or persistent annoyance that wears down the listener. Someone who "fleas the ear" might be a salesperson who won't leave you alone, a friend who constantly complains or a coworker who insists on talking to you when you're trying to work. While it may seem harmless at first, constant fleaing can be incredibly frustrating and hinder productivity or well-being. Being able to identify and avoid fleaing behavior can lead to a happier and more peaceful life.