Clear off Definition 1 of 3Pro Tip 1/3Speedy Exit Used when someone leaves a place quickly, often to avoid trouble or embarrassment. As soon as they saw the security guard, they cleared off. Pro Tip 2/3Colloquial Speech Common in spoken, casual contexts among friends or peers, not in formal writing. If Mom finds out, we'd better clear off! Pro Tip 3/3UK Usage More prevalent in UK English, but understandable in other English-speaking countries. The blokes cleared off when the owner arrived.