amass /əˈmæs/verb 3noun 2forms 5 verb3 •To collect into a mass or heap. •to gather a great quantity of; to accumulate.to amass words or phrases •To accumulate; to assemble. noun2 •(no longer used) A large number of things collected or piled together. •(no longer used) The act of amassing. formsamassed · amassing · amasses · amasseth · amassest