The phrase "bug one ear" is an informal expression that means to annoy or bother someone excessively. There are numerous synonyms for this phrase that can be used to convey the same meaning, such as "get on someone's nerves," "grind someone down," "irritate," "bother," "aggravate," or "exasperate." These phrases all describe behavior or actions that disrupt someone's peace, cause discomfort or irritation, and can result in a negative emotional response. Whether you're talking about a co-worker who won't stop talking, a neighbor who plays loud music, or a family member who's always in your business, these synonyms for "bug one ear" are all useful to have in your vocabulary.