"Get lost" is a colloquial phrase that is commonly used to tell someone to go away or leave. However, there are other synonyms that can be used instead of this phrase. For instance, one may say "beat it" or "take a hike" to convey the same sense of urgency. "Scram" and "buzz off" are also popular replacements for "get lost". Similarly, variations like "make tracks" or "hit the road" can be used to politely ask someone to leave. While these phrases may differ in their connotations, they serve the purpose of expressing one's desire to be left alone or to disengage from a situation.