There are several synonyms for the phrasal verb "sock away" which means to save or store something, typically money. Some alternative options to use in place of "sock away" include "stash," "hoard," "accumulate," "stockpile," "save up," and "put aside." Each of these synonyms carries a similar meaning, but may be used in specific contexts or situations. For example, "stash" and "hoard" may have negative connotations of hiding or hoarding items. "Accumulate" and "stockpile," on the other hand, suggest saving over time to build up a supply. Overall, using synonyms for "sock away" adds variety and depth to writing, while conveying the same essential meaning.