Stash away, meaning to hide or save something for later, has various synonyms that can be used interchangeably. These synonyms are hoard, store, stockpile, cache, stash, reserve, secure, deposit, save, and keep. Hoard implies the collection of items in large quantities, while store suggests placing something in a specific location for later use. Stash refers to hiding something in an inconspicuous or secret place, while cache implies a hidden collection of valuable items. Reserve and stockpile suggest keeping something for emergencies or future needs, while secure connotes keeping something safe from harm or theft. Deposit and save, on the other hand, mean to put something aside for safekeeping or future use.