The phrase "are off with you" is commonly used to tell someone to leave or go away in a slightly abrupt or dismissive way. If you're looking for other ways to express this sentiment, there are a range of synonyms you could consider. Some possibilities might include "get lost", "beat it", "scram", "shoo", "buzz off", "go away", "take a hike", or "hit the road". Each of these phrases conveys a similar sense of dismissal, whether you're trying to send an annoying person on their way or simply asking someone to leave you alone for a while.