en masse \(ˈ)änˈmas, -maa(ə)s, -mais also (ˈ)äⁿˈ- or (ˈ)inˈ- or (ˈ)enˈ-\adverb Etymology: French 1.: in a body < the frogs began to die en masse > < the convicts were transported en masse to the new prison > 2.: in general : as a whole < viewing the new clothes en masse >