The phrase "cached away" refers to something that has been hidden or stored away, often for safekeeping or future use. There are several synonyms for this phrase, including "stored," "reserved," "hidden," "concealed," "stockpiled," "hoarded," and "sequestered." Each of these words carries a slightly different connotation, depending on the context in which they are used. For example, "concealed" suggests that something is intentionally hidden from view, while "stockpiled" implies that something has been collected in large quantities. Ultimately, the choice of synonym depends on the desired tone and meaning of the message being conveyed.