Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb amass
2 senses of amass
Sense 1
accumulate, cumulate, conglomerate, pile up, gather, amass -- (collect or gather; "Journals are accumulating in my office"; "The work keeps piling up")
=> increase -- (become bigger or greater in amount; "The amount of work increased")
Sense 2
roll up, collect, accumulate, pile up, amass, compile, hoard -- (get or gather together; "I am accumulating evidence for the man's unfaithfulness to his wife"; "She is amassing a lot of data for her thesis"; "She rolled up a small fortune")
=> store, hive away, lay in, put in, salt away, stack away, stash away -- (keep or lay aside for future use; "store grain for the winter"; "The bear stores fat for the period of hibernation when he doesn't eat")