rather; rather than; instead; if anything — used to indicate preference for the opposite or to emphasize contrast.
雨なら出かけない方がいい。むしろ家でゆっくりしたほうがいい。
If it's raining, it's better not to go out. Rather, you should relax at home.
彼の説明は間違いというより、むしろ誤解に基づいている。
His explanation isn't so much wrong as based on a misunderstanding.
彼は疲れているどころか、むしろ元気そうだ。
Far from being tired, he actually looks energetic.