When it comes to the phrase "batten down the hatches", there are a variety of synonyms that can be used to convey the same meaning. Some common alternatives include "brace for impact", "prepare for the worst", "get ready for the storm", and "hunker down". These phrases all imply the need to prepare for a difficult or dangerous situation by securing loose items and taking any necessary precautions. Whether you're dealing with a literal storm or a figurative one, using one of these synonyms can help communicate the need to be ready for whatever comes your way.