When you need to get someone or something to clear out of a space immediately, there are plenty of synonyms you can use. In addition to "clear out," you can say "vacate," "evacuate," "empty," or "depopulate." If you want to be more forceful, you can use words like "expel," "banish," or "oust." If you want to communicate urgency, you might opt for "scram," "skedaddle," or "beat it." Whatever synonym you choose, the goal is the same: to get someone or something to leave a space quickly and efficiently. Choose the word that best fits the situation and your communication style.