#1 amass v. [accumulate, cumulate, conglomerate, pile up, gather] collect or gather; "Journals are accumulating in my office"; "The work keeps piling up". wn #2 amass v. [roll up, collect, accumulate, pile up, 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". wn