Bolts down is a phrasal verb that can be used in different contexts, such as expressing the act of eating something quickly, securing something firmly or escaping quickly. To find antonyms for this phrase, we need to consider the opposite meanings of each context. For example, the antonym of bolting down food could be savouring, enjoying or relishing. In terms of securing something, the antonym could be loosening or releasing, and for escaping quickly, the antonym could be staying, settling or remaining in one place. By considering the context of bolting down, we can easily identify the appropriate antonyms to convey the opposite meaning.